FlowTrem2 Installation Guide: Compatibility, Block Height and Initial Setup

FlowTrem2 uses the established Floyd Rose Original-style mounting principle, but the final installation must be checked as a complete KMS system. Pivot geometry, route clearance, MONOLITH block depth, spring geometry, string count and the movement envelope all matter.

For a guitar already equipped with a dimensionally compatible Original-style tremolo, installation normally follows the same basic mechanical architecture without changing the guitar’s fundamental geometry.

In Brief

Confirm the correct six- or seven-string FlowTrem2 version before disassembly.
Treat pivot geometry, cavity clearance and block depth as separate compatibility checks.
Select MONOLITH height from the actual guitar geometry, not from the old block number alone.
Keep the bridge physically supported whenever string or spring tension is removed.
Installation ends with a mechanically stable system; final action, radius, intonation and detailed balancing belong to setup.

In This Article

Compatibility and Planning · Document and Inspect · Prepare the FlowTrem2 · Install the System · Strings and Spring Balance · Initial Setup and Mechanical Checks · Installation vs. Setup

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Compatibility and Planning

Scope of This Guide

This guide covers:

Replacing a compatible six-string Original-style tremolo with FlowTrem2 6
Replacing a compatible seven-string Original-style tremolo with FlowTrem2 7
Inspecting existing studs and inserts
Selecting the correct MONOLITH block height
Installing the MONOLITH block
Installing the bridge on the pivot studs
Installing springs and connecting the spring claw
Establishing the initial floating position
Installing strings
Installing OmniPort and FlowBar
Performing the mechanical checks required before final setup

This guide does not provide complete instructions for:

Routing an unprepared guitar body
Installing a locking nut
Repairing damaged stud holes
Relocating pivot studs
Performing major woodwork
Final action adjustment
Final radius verification
Final intonation
Detailed tremolo balancing
Long-term maintenance

Those subjects require either professional installation or the separate FlowTrem2 Setup and Care guide.

Replacement Installation vs. New Installation

There are two fundamentally different installation situations.

Replacement Installation

The guitar already has:

A compatible Original-style route
Correctly positioned pivot studs
A rear spring cavity
A suitable locking nut
Correct scale geometry
Sufficient bridge clearance

In this situation, FlowTrem2 can normally replace the existing compatible system without changing the basic guitar geometry.

New Installation

The guitar does not already have a compatible double-locking tremolo route.

Installation can then require:

Scale-position calculation
Pivot-hole drilling
Stud-insert installation
Top routing
Rear cavity routing
Spring-claw installation
Locking-nut installation
Neck-height evaluation
Finish repair
Structural inspection

This is precision woodworking.

It should be performed from the current version-specific routing and component drawings by an experienced guitar builder or repair technician.

Do not route or drill a guitar from general dimensions quoted in an article.

The Compatibility Baseline

Floyd Rose officially identifies several systems within each string-count family as sharing the same principal installation dimensions.

For six-string systems, the documented interchangeable Original-style group includes:

Floyd Rose Original
Floyd Rose Custom Shoppe
Floyd Rose 1984
Floyd Rose Special
Floyd Rose 1000 Series Original
Floyd Rose Titanium

For seven-string systems, the documented group includes:

Floyd Rose Original 7
Floyd Rose Custom Shoppe 7
Floyd Rose Special 7
Floyd Rose 1000 Series 7

These systems provide the relevant Original-style dimensional baseline.

FlowTrem2 must still be matched to the correct:

Six-string or seven-string version
Guitar route
Pivot geometry
Tremolo-block depth
Available movement envelope

Do not install a six-string FlowTrem2 in a seven-string route or vice versa.

Do Not Transfer the Existing Block Number Blindly

Do not select the MONOLITH configuration from the old printed or measured block length alone. Record the existing block body separately from every spacer, note the spring position and inspect the available cavity and rear-cover clearance through the actual movement range.

A conventional 0.5 mm Fine Tuner Tension Plate plus 1.0 mm support/shim layer adds approximately 1.5 mm to the underside stack. Standard FlowTrem2 omits that stack, so identical nominal block lengths do not automatically place the spring attachment at the same depth. If the optional conventional Fine Tuner Tension Plate and KMS support sheet are deliberately used, include that approximately 1.5 mm stack in the comparison.

Where a Spring Retainer is fitted, it adds approximately 3.3 mm to the physical overall MONOLITH assembly length. The 42 mm block is supplied without a Spring Retainer. The first limiting contact may therefore be the block body, Spring Retainer where present, spring, cavity wall or rear cover.

For a direct replacement:

Measure the existing block body and spacers separately.
Document the existing spring position and movement clearance before removal.
Compare effective reach below the baseplate, not only the nominal block number.
Select the shortest MONOLITH configuration that provides suitable spring geometry and the required movement range without contact.
Test the complete intended dive and pull-up range with the rear cover installed.

For the complete dimensional method and comparison tables, see How to Choose the Correct Tremolo Block Height →

Licensed Systems Require Measurement

The phrase:

Licensed under Floyd Rose Patents

does not establish one universal component specification.

Licensed systems can differ in:

Pivot spacing
Stud thread
Stud-head geometry
Insert diameter
Baseplate outline
Tremolo-block position
String spacing
Rear-locking-screw length
Route dimensions
Pull-up clearance

Some licensed systems closely follow Original dimensions.

Others do not.

A visual resemblance is not sufficient.

Before ordering or installing FlowTrem2, confirm the actual guitar geometry.

Original Six-String Reference Geometry

The current official Floyd Rose Original six-string drawing provides representative reference dimensions including:

Pivot spacing: 74.3 mm
Stud thread: M7 × 0.5
Stud-head diameter: approximately 8.5 mm
Insert body: approximately 9.8 mm
Maximum insert knurl: approximately 10.1 mm
String spacing: 10.8 mm between adjacent strings
Overall E-to-E saddle spacing: 54 mm

These dimensions identify the Original six-string reference architecture.

They must not be transferred automatically to:

Seven-string systems
Licensed systems
Low-profile systems
Ibanez Edge systems
Floyd Rose Pro systems
Other double-locking tremolos

Use the correct drawing for the actual system.

Tight OEM Routes

Even where bridge dimensions are fundamentally compatible, the guitar manufacturer may have used a tighter-than-standard route.

This can occur around:

Rear locking screws
Saddle screw heads
Fine tuners
Tremolo-block movement
Pull-up travel
Baseplate corners

Floyd Rose specifically notes that some guitars originally routed for shorter Special-series locking screws may require additional space when fitted with an Original-style bridge using longer screws.

FlowTrem2 must therefore be checked through its complete movement range.

Nominal post compatibility does not prove cavity clearance.

The Complete Compatibility Check

Before removing the original bridge, confirm:

Correct string-count version
Pivot-center spacing
Stud-head geometry
Stud and insert condition
Baseplate route
Rear locking-screw clearance
Tremolo-block cavity depth
Spring-cavity width
Pull-up clearance
Required bridge height
Locking-nut compatibility
Intended string gauge
Intended tuning
Floating, decked or dive-only setup

A compatible tremolo must fit as a moving system.

It is not enough for the baseplate to sit on the studs.

Document and Inspect

Before Removing the Original Tremolo

Document the current guitar configuration.

Record or photograph:

Bridge position
Baseplate angle
Pivot-stud height
Spring arrangement
Spring-claw position
Number of springs
Tremolo-block depth
Rear cavity clearance
Saddle positions
Locking-nut orientation
String gauge
Tuning
Current action
Pull-up range

Take photographs from:

Above the bridge
Bass side
Treble side
Rear spring cavity
Tremolo-block side
Pivot-stud area

These references help identify the original setup and make reversal possible.

Required Tools

Depending on the guitar and FlowTrem2 configuration, useful tools may include:

Accurate electronic tuner
Correct metric hex keys
Correct screwdrivers
Digital caliper
String-action ruler
Radius gauges
String winder
Spring-removal tool or suitable protected hook
Soft protective cloth
Stable neck support
Low-tack finish-safe protection
Tremolo setup block
Current KMS component instructions

Use only tools that fit the fasteners correctly.

Titanium fasteners and precision sockets should not be handled with:

Worn hex keys
Incorrect imperial tools
Pliers
Adjustable wrenches
Damaged screwdrivers

Protect the Guitar

Place the guitar on a stable padded surface.

Protect:

Guitar top
Cavity edges
Pickup area
Rear finish
Neck
Headstock

A released spring or unsecured bridge can move suddenly.

The bridge must always be physically supported while spring or string tension is being removed.

Stabilize the Existing Bridge

A floating tremolo is held between two opposing force systems:

String tension pulling toward the neck
Spring tension pulling toward the rear cavity

Removing one side of that balance allows the bridge to move.

Before disassembly, stabilize the bridge using:

A suitable setup block
A protected wooden or plastic spacer
Another non-damaging support method

Do not use a hard metal object directly against the guitar finish or tremolo.

Release the Locking Nut

Loosen the string clamps at the locking nut.

Do not attempt to detune a fully locked system only through the fine tuners.

Back the fine tuners away from extreme positions so that the original system can be handled safely.

Reduce String Tension

Detune the strings gradually.

When the strings become slack:

Keep the bridge supported.
Prevent the baseplate from falling away from the pivot studs.
Prevent locking screws from striking the guitar body.
Prevent string ends from scratching the finish.

The strings may be removed completely.

For a direct replacement, installing a fresh string set is normally preferable because the complete setup will need to be re-established.

Remove the Tremolo Springs

Remove the rear cavity cover where present.

Support the bridge securely.

Then remove the springs one at a time.

Possible spring arrangements include:

Three parallel springs
Two outer springs
Angled springs
Four springs
Five springs
Product-specific combinations

Document the arrangement before changing it.

Spring removal stores and releases significant mechanical energy.

Protect the guitar and keep hands away from uncontrolled spring movement.

Remove the Existing Bridge

With strings and springs unloaded, lift the original tremolo carefully from the studs.

Do not:

Pull the bridge sideways against the knife edges
Use the arm as a removal lever
Force the baseplate past the stud heads
Twist the bridge against the guitar finish
Strike the studs

The baseplate should disengage from the pivot studs without excessive force.

Keep Original Parts Organized

Store removed components separately, including:

Bridge
Springs
Tremolo arm
Studs
Inserts where removed professionally
Original tremolo block
Block screws
Locking screws
Locking inserts
Fine Tuner Tension Plate
Tremolo Block Shim
Cavity cover
Setup spacers

Do not discard the original parts.

A direct replacement should remain reversible wherever the guitar has not been modified.

Inspect the Studs

Check both pivot studs for:

Bent shafts
Damaged threads
Rounded V-grooves
Corrosion
Unequal height
Tool damage
Excessive movement
Incorrect head geometry

The knife edges must contact defined, undamaged pivot surfaces.

A new bridge cannot return accurately against damaged studs.

Inspect the Inserts

Check the body inserts for:

Movement in the wood
Lifting
Tilting
Cracked surrounding finish
Damaged internal threads
Previous adhesive repair
Oversized holes
Corrosion

Do not replace secure and compatible inserts without a reason.

Removing press-fit inserts can damage:

Wood
Finish
Hole alignment
Structural support

Replacement is appropriate when the inserts are:

Incompatible
Loose
Damaged
Misaligned
Required by a confirmed KMS installation specification

Inspect the Guitar Route

With the bridge removed, inspect:

Pivot area
Top route
Rear locking-screw area
Tremolo-block cavity
Spring cavity
Cavity walls
Finish edges

Look for evidence of previous contact, including:

Scraped wood
Finish wear
Screw marks
Block impact
Baseplate impact
Compressed cavity edges

Existing contact marks can identify where clearance was already limited.

Check the Locking Nut

The locking nut must be:

Securely attached
Correctly sized
Correctly positioned
Free from damaged clamps
Compatible with the string spacing
At a suitable height

Bridge replacement does not correct:

Loose nut mounting
Incorrect nut height
Worn clamp surfaces
Damaged threads
Incorrect neck geometry

A secure locking nut is essential to double-locking tuning stability.

Do Not Adjust Stud Height Under Heavy Load During Installation

For the initial installation, set the approximate stud height while the bridge is unloaded or substantially detensioned.

Large stud-height changes under full string and spring load can place unnecessary pressure on:

Knife edges
Stud grooves
Stud threads
Inserts

Final small corrections should follow current KMS guidance.

When resistance, binding or insert movement is present, stop and inspect the system.

Prepare the FlowTrem2

Preparing the FlowTrem2 Assembly

Before placing the bridge into the guitar, identify all FlowTrem2 components.

Depending on the selected version and configuration, these can include:

Grade 5 titanium baseplate
FlowTrem2 saddles
Saddle mounting screws
Locking screws
Locking insert blocks
Fine-tuner screws
MONOLITH tremolo block
2 mm Height Spacer
Tremolo-block mounting screws
OmniPort socket
OmniPort cap
Retaining clip
M3 fastener
FlowBar
O-rings
Pivot studs
Bushings
Tremolo springs
Spring claw
Installation tools

Confirm that all parts belong to the same:

Six-string or seven-string version
Finish
Saddle configuration
Block configuration
Production generation

Do not combine six-string and seven-string components.

Selecting the Tremolo Block Height

The tremolo block must extend far enough into the spring cavity to provide:

Secure spring engagement
Useful spring geometry
Stable movement
Suitable claw alignment

It must not be so long that it contacts:

Rear cavity cover
Guitar body
Cavity floor
Cavity wall
Spring claw
Wiring

Block selection is determined by the guitar geometry.

It is not determined only by body thickness.

MONOLITH Tremolo Block System

FlowTrem2 uses the modular MONOLITH+2 block concept. Current base blocks are 30, 35 and 42 mm, with up to two 2 mm spacers maximum:

30 / 32 / 34 mm
35 / 37 / 39 mm
42 / 44 / 46 mm

The 30 and 35 mm configurations are supplied with one 2 mm spacer and a pre-installed Spring Retainer. The 42 mm block is supplied without a spacer and without a Spring Retainer. Spacers allow the effective block depth to be adapted without replacing the complete block.

Select the configuration according to:

Body thickness
Top-route depth
Spring-cavity depth
Recessed or top-mounted bridge position
Required bridge height
Rear-cover clearance
Desired spring position

Use only KMS-approved combinations.

Do not improvise spacers from washers, loose sheet material or unrelated hardware.

Measuring the Required Depth

With the guitar unloaded, measure the distance from the intended underside position of the baseplate to the limiting point inside the spring cavity.

Account for:

Baseplate position
Block attachment
Spacer thickness
Bridge neutral angle
Pull-up movement
Dive movement
Spring hooks
Rear cavity cover
Manufacturing tolerance

The longest block that physically enters the cavity is not necessarily the correct block.

The block must remain clear throughout the complete movement path.

Recessed Floating Installation

A recessed floating installation normally allows:

Downward pitch movement
Upward pitch movement
Baseplate movement inside the top route

The block must clear the cavity during both directions of travel.

Check:

Front cavity wall during pull-up
Rear cavity wall during dive
Cavity floor
Rear cover
Spring position

The clearance test must be performed with the bridge at the approximate installed stud height.

Top-Mount Installation

A top-mounted bridge sits above the guitar top rather than inside a full recessed route.

This can require the 42 mm MONOLITH block or another specifically selected configuration. Its greater length may suit some non-recessed or higher-mounted tremolo installations, but this application is not part of the product name.

The correct setup depends on:

Body thickness
Neck angle
Stud height
Spring-cavity depth
Whether pull-up is required
Whether the bridge is decked or floating

A top-mount installation must not be treated as a recessed installation with a longer block chosen automatically.

The complete geometry must be evaluated.

Decked or Dive-Only Installation

In a decked or dive-only installation, the bridge rests against:

Guitar body
A controlled stop
A tremolo-blocking device

This changes the neutral-force relationship.

The physical stop defines one side of the movement.

Confirm that the contact:

Is intentional
Is stable
Does not damage the guitar finish
Does not twist the baseplate
Does not load only one corner
Allows secure tuning

Permanent blocking or stop installation should be carried out professionally.

Install the System

Installing the MONOLITH Block

Place the selected MONOLITH block squarely against the underside of the FlowTrem2 baseplate.

Confirm:

Correct orientation
Clean mating surfaces
No debris
Correct spacer position
Correct screw length
Full seating

Insert the approved block screws.

Tighten them:

Evenly
Progressively
In alternating stages
With the correct tool
Without exceeding current KMS guidance

The block must sit fully against the baseplate.

It must not be pulled into alignment by one screw while the opposite side remains lifted.

Do Not Substitute Block Screws

Incorrect screws can cause:

Insufficient thread engagement
Bottoming before clamping
Damage to titanium threads
Misalignment
Block movement
Baseplate damage

Use the correct KMS screws for:

Block
Spacer combination
Production version

Fine-Tuner Architecture Without Tension Plate

Standard FlowTrem2 omits the conventional permanent Fine Tuner Tension Plate.

For the standard configuration, do not transfer the original Fine Tuner Tension Plate or its support to the FlowTrem2 assembly.

The separate KMS Fine Tuner Spring Plate Support Sheet belongs only to the documented optional conventional-plate configuration; it is not part of the standard FlowTrem2 assembly.

The absence of the Tension Plate does not change the normal saddle support geometry or block height. It removes the unloaded upward preload normally applied to the String Locking Screws.

The KMS system must be installed in its intended configuration.

Fine-Tuner Contact

Because the conventional spring-plate arrangement is not used, the fine tuners must establish the intended direct contact with the locking screws.

Before initial tuning:

Confirm that every locking screw is installed correctly.
Turn each fine tuner downward until it reaches controlled contact with its corresponding locking screw.
Establish usable adjustment travel from that contact position.
Avoid leaving a fine tuner completely disengaged from the locking screw.
Avoid starting with the fine tuner at the end of its usable range.

The final fine-tuner position will be established during stringing and tuning.

FlowTrem2 Saddles

FlowTrem2 saddles center and support each string through precision-machined geometry.

The V-shaped string contact is one integrated feature of the complete saddle architecture. It works together with gauge-dependent support height, increased usable fine-tuner travel, extended intonation range and the internal string-locating recess.

FlowTrem2 does not use a separate V+ saddle model. The applicable surface finish is defined by the selected FlowTrem2 version, not by a different saddle name.

Do not:

File conventional string slots
Cut the V-shaped contact deeper
Round the contact edges
Use abrasive tools
Modify the functional geometry or coated contact surfaces

The complete FlowTrem2 saddle geometry is a finished functional system. The V-shaped contact must not be altered.

Locking Inserts

Use the correct KMS locking insert blocks.

Confirm that each insert:

Sits in the correct saddle
Matches the saddle generation
Faces the intended direction
Moves freely before clamping
Has no debris beneath it

Do not reuse damaged, deeply marked or incompatible locking inserts.

Low-Profile Fasteners and Clearance

Some guitars provide limited space around the rear of the saddle assembly or within the top route.

Where KMS supplies or specifies low-profile fasteners, use them only in the defined positions.

Do not create clearance by:

Grinding screw heads
Shortening screws without specification
Substituting weaker fasteners
Removing material from saddles
Removing material from the baseplate

Clearance must be created through the correct component or professional route correction.

Test-Fitting the FlowTrem2

Before installing strings or springs, place the assembled FlowTrem2 carefully onto the pivot studs.

The knife edges must enter the stud grooves correctly.

The bridge should:

Engage both studs simultaneously
Sit without severe sideways pressure
Move through its intended pivot arc
Remain centered in the route
Provide access to all fine tuners
Provide access to all locking screws
Keep the MONOLITH block clear of the cavity

Do not use the bridge as a lever to bend the studs into position.

Knife-Edge Seating

Inspect both pivot contacts.

Each knife edge must sit in the intended V-groove of its stud.

Incorrect seating can occur when:

One stud is higher than the other
One insert is tilted
Pivot spacing is incompatible
A stud groove is damaged
The bridge is twisted
The baseplate contacts the route
Debris is trapped at the pivot

A bridge can appear installed while only one knife edge is properly seated.

Both pivot contacts must be verified.

Initial Stud Height

Set an approximate initial bridge height that provides:

Clearance above the guitar top
Clearance inside the route
Suitable initial action
Sufficient pull-up movement where required
Sufficient dive movement
Stable knife-edge seating

Do not attempt final action adjustment at this stage.

The neck, strings and spring balance must first be established.

Full Movement Check

Move the unloaded bridge carefully through its expected range.

Check for contact at:

Front edge of the baseplate
Rear edge of the baseplate
Saddle mounting screws
Locking screws
Fine tuners
OmniPort area
MONOLITH block
Spring hooks
Cavity floor
Cavity walls
Rear cover

Any unexplained contact must be corrected before strings and springs are fully tensioned.

Installing OmniPort

The OmniPort is the FlowTrem2 arm-socket system.

Depending on production configuration, the assembly can include:

OmniPort socket
Cap
Retaining clip
M3 fastener
Sealing or friction components

Install the parts in the current KMS-defined order.

Confirm:

Socket orientation
Full seating
Correct clip position
Correct fastener
Free internal movement
No interference with the baseplate or cavity

Do not overtighten the small retaining hardware.

The socket must remain secure without deformation.

Installing FlowBar

Inspect the FlowBar and its O-rings.

The O-rings provide controlled friction and movement within the arm system.

Before insertion, confirm:

O-rings are present
O-rings are undamaged
O-rings are seated in their grooves
Arm surface is clean
Socket is free from debris

Insert the FlowBar according to the OmniPort mechanism.

It should engage securely while retaining the intended adjustable movement.

Do not force the arm into a misassembled socket.

FlowBar Movement

The installed arm should provide:

Secure retention
Smooth rotational positioning
Controlled operating resistance
No excessive side play
No contact with the guitar body
No interference through the full tremolo range

Arm friction is adjusted through the intended OmniPort system and O-ring condition.

Do not attempt to correct loose or tight arm movement by bending the FlowBar.

Strings and Spring Balance

Installing the Springs

Turn the guitar over while supporting the bridge.

Connect the tremolo springs between:

MONOLITH block
Spring claw

Possible initial arrangements include:

Three parallel springs
Three angled springs
Two springs for light tension
Four or more springs for high tension
Other balanced arrangements

The required number depends on:

String count
String gauge
Tuning
Spring strength
Desired feel
Available claw position

For a seven-string instrument or a heavy string set, more spring force may be required than for a light six-string set.

Spring Arrangement

A symmetrical arrangement is a useful starting point.

Examples include:

Three parallel springs
Two outer springs with one centered
Four symmetrically distributed springs

Angled springs can change the combined force and lateral loading.

They should not be used merely for appearance.

The final arrangement should keep:

Block force centered
Spring contact clear
Springs away from cavity walls
Spring hooks fully engaged

Spring-Claw Inspection

Before applying full tension, inspect the spring claw.

It must be:

Securely mounted
Free from cracks
Correctly aligned
Adequately engaged by both claw screws
Electrically grounded where the guitar design requires it

The two claw screws should provide secure thread engagement in the guitar body.

Do not back them out so far that they become unstable.

Establishing Initial Claw Position

Begin with the claw approximately centered within its useful adjustment range.

The final position will be determined by the balance between:

String tension
Spring tension

Tightening the claw screws increases spring tension.

Loosening them decreases spring tension.

Adjust both screws evenly unless a deliberate product-specific correction is required.

The claw should not be left severely angled without a defined reason.

Supporting the Bridge During Initial Tension

Use a tremolo setup block or another finish-safe support to hold the bridge near its intended neutral position.

This prevents the bridge from moving dramatically while:

Springs are installed
Strings are installed
Tuning begins
Claw position is adjusted

The support should hold the bridge without damaging:

Guitar top
Baseplate
Tremolo block
Finish

Floating Neutral Position

For a conventional recessed floating Original-style installation, the intended starting reference is normally a baseplate that sits parallel to the guitar top or intended bridge reference plane.

This establishes balanced movement in both directions.

The exact neutral position can vary when the system is:

Top-mounted
Decked
Dive-only
Mechanically stopped
Installed on a guitar with unusual top geometry

Do not force a decked system to follow a floating-system reference.

Do Not Finalize Spring Balance Yet

At this stage, the objective is only to create enough controlled spring force to install and tune the strings.

Final spring balance is completed after:

Intended strings are installed
Intended tuning is reached
Bridge level is checked
Neck condition is evaluated

Changing string gauge or tuning changes the required spring force.

Preparing the Fine Tuners

Before installing and tuning the strings, place the fine tuners in a usable central operating range.

Because FlowTrem2 uses direct contact rather than the traditional spring-plate assembly:

Confirm contact with each locking screw.
Do not leave the fine tuners fully backed away.
Do not begin with them fully tightened.
Preserve adjustment in both pitch directions.

The exact usable center is established from the point at which the fine tuner contacts the locking screw.

Preparing the Strings

Use the string gauge and tuning intended for normal use.

The initial installation must not be balanced with one string set and then finalized with another.

Changing string gauge or tuning alters:

Total string tension
Bridge angle
Spring requirement
Claw position
Action
Intonation
Playing feel

Use fresh, undamaged strings.

Opening the Bridge Locks

Back the FlowTrem2 locking screws out only far enough to release the insert blocks.

Do not remove them unnecessarily.

Confirm that each locking insert remains correctly positioned inside its saddle.

Preparing the String Ends

For conventional double-locking installation, remove the ball end from each string with a suitable clean cutter.

Create a straight, undamaged string end.

Avoid:

Flattened ends
Sharp bends
Frayed windings
Excessive exposed core
Contamination

The cut section must fit fully into the locking area.

Some players install suitable strings in another orientation, but the method must remain compatible with the locking system and guitar layout.

The standard controlled method uses a clean cut end at the bridge.

Inserting the Strings

Insert each string fully into its saddle.

The string must:

Reach the intended locking position
Sit centrally in the saddle
Remain straight
Avoid resting on the edge of the insert
Avoid being trapped at an angle

Hold the string in position while tightening the locking screw.

Tightening the String Locks

Tighten each locking screw securely with the correct tool.

The objective is reliable clamping.

Do not use excessive force.

Overtightening can damage:

Locking insert
String
Screw socket
Screw thread
Saddle

A string that repeatedly slips should be inspected for:

Incorrect insertion
Damaged insert
Wrong insert orientation
Frayed string end
Contamination
Incompatible part

V-Saddle String Position

As each string is brought toward tension, confirm that it settles centrally in the V-saddle.

Do not create or file an additional notch.

The V geometry is designed to establish the string position.

Check the outer strings especially carefully.

They must remain suitably aligned with:

Fretboard edges
Pickup pole area
Locking nut
Neck centerline

Initial Setup and Mechanical Checks

Initial Headstock Tuning

Leave the locking-nut clamps released.

Tune the guitar using the machine heads.

Because the bridge floats, changing one string changes the tension relationship of all other strings.

Tune progressively across the complete set.

Repeated passes are normal.

A useful sequence is:

Bring every string gradually toward pitch.
Recheck the lowest string.
Correct the complete set again.
Repeat until all strings remain close to the intended pitch.
Keep the setup block in place until the system is near equilibrium.

Remove the Setup Block Carefully

When string and spring tension are close to balance, the setup block should become lightly loaded or free.

Remove it carefully.

If the bridge moves sharply:

The force systems are not yet balanced.
Reinstall the support.
Correct the claw position or tuning.
Repeat gradually.

Do not pull a heavily trapped setup block from beneath a loaded bridge.

Check the Baseplate Angle

With the strings tuned and the support removed, inspect the bridge from the side.

For a conventional floating installation:

Baseplate tilted toward the pickups or away from the body: Increase spring tension.
Baseplate tilted back into the guitar: Reduce spring tension.

Make claw adjustments in small increments.

After every claw adjustment:

Retune all strings.
Recheck the bridge angle.
Repeat until both tuning and neutral position are stable.

Adjusting the Claw

To increase spring tension:

Turn both claw screws inward in small equal increments.

To reduce spring tension:

Turn both claw screws outward in small equal increments.

Do not attempt to correct a large imbalance with one claw screw only.

Maintain:

Secure screw engagement
Stable claw alignment
Centered spring loading

Seven-String Balancing

A seven-string system typically carries more total string tension than a comparable six-string system.

It can require:

More springs
Stronger springs
Greater claw engagement
A different spring arrangement

The correct balance is determined by the actual:

Gauges
Tuning
Scale length
Spring specification

Do not copy a six-string spring arrangement without evaluating the resulting force.

Locking the Nut

Only lock the nut after:

All strings are stable
Intended tuning is reached
Bridge neutral position is correct
Strings have been stretched
Coarse action is acceptable
No major setup change remains

Tighten the nut clamps securely but without unnecessary force.

After locking, use only the FlowTrem2 fine tuners for normal small pitch corrections.

Fine-Tuning

Check each string and correct it with the fine tuners.

The fine tuners should provide useful movement in both directions.

When one or more fine tuners reach the end of their range:

Release the nut clamps.
Return the fine tuners to their useful central range.
Tune with the machine heads.
Recheck bridge balance.
Lock the nut again.
Finish with the fine tuners.

Coarse Action Check

After initial balance, inspect the string height.

At this stage, confirm only that the action is:

Playable
Free from severe contact
High enough for initial testing
Within useful stud-adjustment range

The final action is set in the separate setup procedure after:

Neck relief
Radius
Nut condition
Bridge balance

have been evaluated.

Initial String-Radius Check

KMS V-saddles support the strings through their geometric form and interaction with the actual string diameters.

Do not judge the resulting radius only from the visible saddle-body heights.

Measure the strings themselves.

Final radius verification belongs to the setup procedure.

Initial Intonation Position

FlowTrem2 provides additional usable intonation direction compared with the conventional Original layout.

For the initial installation:

Confirm that every saddle is securely mounted.
Confirm that every saddle has useful forward and rearward travel.
Do not perform final intonation before bridge balance and action are established.
Do not loosen saddle mounting screws under full string tension.

Final intonation is performed after the complete basic setup is stable.

Tightening Saddle Mounting Screws

Floyd Rose identifies loose saddle intonation or mounting screws as a potential source of mechanical problems.

Confirm that every FlowTrem2 saddle mounting screw is securely seated.

Do not overtighten titanium fasteners.

The saddle must remain stable against the baseplate without damaging:

Screw socket
Thread
Saddle
Baseplate

Use current KMS tightening guidance where supplied.

Final Mechanical Inspection

Before beginning detailed setup, inspect the complete FlowTrem2 system.

Confirm:

Both knife edges sit correctly in the studs.
Both studs remain stable.
Both inserts remain secure.
The baseplate moves without body contact.
The MONOLITH block clears the cavity.
The springs remain fully engaged.
The spring claw remains secure.
The FlowBar moves freely.
OmniPort remains secure.
All strings are locked correctly.
All locking inserts remain seated.
All saddles remain secure.
All fine tuners operate.
The locking nut remains secure.

Movement Test

Operate the FlowBar gradually.

Test:

Moderate dive
Return to neutral
Moderate pull-up where the guitar is routed for it
Return to neutral
Small vibrato movement

Do not begin with maximum travel.

Listen and feel for:

Impact
Scraping
Sudden resistance
Clicking
Spring contact
Block contact
Unstable pivot movement

Stop immediately when the bridge contacts the guitar.

Return-to-Pitch Check

After moderate arm use:

Release the arm without forcing it.
Check the open-string tuning.
Repeat several times.
Compare dive and pull-up return.

Small pitch variation can occur while:

New strings are settling
Locks are not fully seated
Spring balance is still changing
The system has not completed final setup

Persistent return error should be investigated before finalizing the installation.

Common Causes of Initial Return Problems

Possible causes include:

Bridge not level in a floating setup
Knife edge not seated correctly
Damaged pivot stud
Loose stud insert
Loose locking nut
Inadequate bridge string lock
Loose saddle mounting screw
Spring contact with the cavity
MONOLITH block contact
Locking screw contact with the route
Incorrect string installation
Unstretched strings
Incompatible licensed-system geometry

Do not attribute every tuning problem to the bridge material.

Cavity Clearance Under Full Movement

Inspect the system during movement from both sides and through the rear cavity.

Check:

Locking-screw ends
Fine tuners
Saddle screws
Baseplate corners
OmniPort assembly
MONOLITH block
Springs
Spring claw
Wiring

A bridge that clears at neutral may contact the body during pull-up or dive.

Rear Cover Clearance

Before reinstalling the rear cavity cover, confirm clearance between the cover and:

Tremolo block
Springs
Spring hooks
Claw screws
Wiring

Test the complete movement range with the cover temporarily positioned.

Do not allow the block to strike the cover.

Electrical Ground

Most tremolo-equipped electric guitars use a ground connection to the spring claw or bridge system.

Confirm that the existing ground connection remains:

Present
Secure
Electrically continuous
Free from broken solder joints

A bridge replacement should not leave the string ground disconnected.

Electrical work should be performed safely and professionally.

Do Not Perform Irreversible Work to Solve an Unidentified Problem

Do not immediately:

Enlarge the route
Drill new pivot holes
Replace inserts
Grind screws
Remove titanium material
Bend studs
Modify saddles
Alter the MONOLITH block

First identify the exact contact or compatibility problem.

A small visible mismatch can indicate a fundamentally different tremolo standard.

When Professional Installation Is Required

Professional installation is recommended when:

The guitar does not have an Original-style route.
Pivot spacing cannot be confirmed.
Stud inserts are loose.
Stud holes require repair.
Licensed-system dimensions differ.
The route requires enlargement.
The locking nut must be installed or replaced.
The neck angle is unsuitable.
The bridge cannot reach a useful action range.
The MONOLITH block contacts the cavity.
The top finish is fragile.
Wood or finish is cracked around the inserts.
Electrical grounding requires repair.
Full pull-up clearance cannot be established.
Correct spring balance cannot be reached safely.

Stop whenever installation requires unexplained force.

Quick Replacement Sequence

Confirm six-string or seven-string compatibility.
Identify the existing tremolo system.
Measure the pivot and route geometry.
Select the correct MONOLITH block configuration.
Document the original setup.
Protect the guitar.
Stabilize the original bridge.
Release the locking nut.
Detune and remove the strings.
Remove the springs while supporting the bridge.
Lift the original bridge from the studs.
Inspect studs, inserts, nut and cavities.
Assemble the correct MONOLITH block and spacer.
Do not install the traditional Floyd Rose spring-plate assembly.
Confirm fine-tuner contact with the locking screws.
Test-fit FlowTrem2 on both pivot studs.
Check the complete movement envelope.
Install OmniPort and FlowBar.
Install the selected spring arrangement.
Support the bridge near its intended neutral position.
Install the intended string set.
Lock the strings securely at the bridge.
Tune with the nut clamps released.
Balance the bridge through the spring claw.
Stretch and stabilize the strings.
Lock the nut.
Fine-tune.
Perform a moderate movement and return test.
Recheck all clearances.
Continue with the FlowTrem2 Setup and Care procedure.

Common Installation Mistakes

Avoid:

Ordering by appearance alone
Assuming every licensed tremolo is Original-compatible
Using six-string dimensions for a seven-string system
Selecting the block only by body thickness
Reusing damaged pivot studs
Forcing the bridge onto incompatible posts
Installing the original fine-tuner spring plate
Filing KMS V-saddles
Modifying V+ contact surfaces
Using random block spacers
Substituting incorrect titanium fasteners
Starting with disengaged fine tuners
Overtightening locking screws
Balancing with the wrong strings or tuning
Removing secure inserts unnecessarily
Ignoring rear locking-screw clearance
Checking only the neutral position
Adjusting one claw screw excessively
Locking the nut before the strings stabilize
Intonating before spring balance and action are established
Grinding components before identifying the incompatibility

Installation vs. Setup

Installation establishes:

Mechanical compatibility
Correct component assembly
Stable pivot contact
Suitable block depth
Spring connection
String locking
Initial force balance
Complete movement clearance

Setup establishes:

Neck relief
Final bridge height
Action
String radius
Spring feel
Neutral bridge angle
Intonation
Pickup clearance
Fine-tuner range
Return-to-pitch performance

A successfully installed bridge is not automatically fully set up.

The KMS Installation Principle

FlowTrem2 combines established Original-style compatibility with a fundamentally redesigned titanium system.

The mounting architecture connects the bridge to the guitar.

The KMS components determine how the system performs within that architecture.

Correct installation allows:

Grade 5 titanium construction
Fine-tuner architecture without a tension plate
FlowTrem2 saddle architecture
MONOLITH block architecture
OmniPort
FlowBar
Extended intonation range
Precision pivot movement

to operate as one integrated tremolo.

Final Verification

Before considering the installation mechanically complete, verify:

Pivot studs
Knife edges
Guitar route
Tremolo block
Springs
Spring claw
Strings
Locking nut
Saddles
Fine tuners
Arm system

The installation is complete only when the bridge moves freely through the intended range without unexplained resistance or body/rear-cover contact. Final action, radius, intonation and detailed balance are completed in the separate Setup & Care guide.