KW Variant 4 (V4) Racing Coilover Set - F80 M3, F82 M4, F87 M2
KW suspensions combines German engineering with decades of motorsport experience to produce world-leading suspension systems for road and track. From height adjustable spring kits and coilover suspensions to dedicated racing systems, KW offers an extensive range to suit different vehicles, driving styles and performance goals. Each application is carefully engineered and tested to deliver the handling characteristics and ride quality appropriate to its intended use. With ongoing investment in research and development, alongside close collaboration with racing teams worldwide, KW continues to bring advanced suspension technology to everyday drivers, performance enthusiasts and professional competitors.
Damping Adjustment: Rebound And Compression Adjustment
Material: FA: Galvanized Steel / RA: Aluminium
Adjustment FA/RA: Thread/Thread
Approval: Without (According To German Law Not Permissible)
FITMENT & REQUIREMENTS
Suitable for BMW F87 M2 Coupe (Base – N55, M2 Competition, M2 CS), F80 M3 Sedan (Base, M3 Competition, M3 CS), and F82 M4 Coupe (Base, M4 Competition, M4 CS, M4 GTS) models only. Refer to the model/variant list at the bottom of this page for full compatibility.
Upside down solution for front axle shock with 40mm plain bearing.
No installation manual available.
39720338: Modifications at the vehicle are necessary for the installation of the race struts.
39720338: Spring rate FA 140-140* + 10-60-80, RA 150-50-170* + 5-50-80.
39720339: Spring rate FA 140-140 + 10-60-60, RA 220-200 + 20-60-80.
39720354: Rear axle will be delivered as a strut (spring on damper).
39720354: Spring rate FA 160-140* + 10-60-60, RA 160-50-170* + 5-50-80.
39720354 / 39720355: Height adjustable front and rear axles (front axle threaded strut housings, rear axle adjustable springs + dampers).
39720354 / 39720355: Dampers are adjusted by easily operating adjustment wheels. Rebound is only adjustable if the top of the piston rod is accessible. This will depend on the vehicle construction.
39720354 / 39720355: Clubsport coilover with top mount: only with front axle top mount available.
39720355: Separate Height adjuster for rear axle.
39720355: Spring rate FA 160-140* + 10-60-60, RA 260-200* + 20-60-80.
WHAT'S INCLUDED
39720338 / 39720339: Set FA + RA.
39720354 / 39720355: Set FA + RA coilover struts incl. FA + RA top mounts.
Images are for illustration purposes only. The appearance and components shown may vary for your vehicle.
Product Information
ABOUT KW VARIANT 4 (V4) RACING COILOVERS
KW V4 Racing coilovers combine adjustable ride height with motorsport damper technology developed for dedicated track and competition cars.
With three-way damping adjustment, they provide detailed control over the suspension’s response to driver inputs and track surfaces. The range is designed for the high loads encountered in circuit racing and other motorsport applications.
THREE-WAY ADJUSTMENT FOR CIRCUIT PERFORMANCE
The three-way V4 Racing configuration provides independent adjustment of low-speed compression, high-speed compression and rebound damping.
Low-speed compression helps refine body support during braking and cornering. High-speed compression influences the response to rapid suspension movements over bumps and kerbs. Rebound adjustment controls the suspension’s extension after compression.
Together, these adjustments allow the setup to be developed around the circuit and the vehicle’s behaviour. KW also offers two-way configurations where required by the application or competition regulations.
MONOTUBE DAMPERS AND DISC SPRING VALVE TECHNOLOGY
V4 Racing uses monotube dampers with separate compression and rebound valves and disc spring valve technology.
KW can engineer the damping characteristics for the demands of the application, including linear, progressive or digressive force curves. This gives its motorsport engineers scope to match the damper response to the vehicle and intended use.
MacPherson applications use an inverted strut design to suit the loads placed on the wheel-guiding suspension components.
HARDWARE MATCHED TO THE RACING APPLICATION
Height-adjustable racing struts or separate height-adjustment arrangements are used according to the suspension layout.
Damper dimensions, mounting arrangements and the supplied hardware depend on the application. KW’s V4 Racing range also supports bespoke motorsport developments, allowing the suspension specification to be tailored where a standard application does not meet the build’s requirements.
KEY FEATURES
Developed for dedicated track and competition use.
Three-way damping adjustment in the corresponding configuration.
Independent low-speed and high-speed compression adjustment.
Independently adjustable rebound damping.
Monotube dampers with disc spring valve technology.
Inverted struts for MacPherson applications.
Adjustable ride height.
Application-specific motorsport construction.
KW V4 CLUBSPORT OR KW V4 RACING?
KW V4 Clubsport is designed for road cars that regularly attend track days, combining three-way damping adjustment with a setup developed for sports tyres and circuit driving.
KW V4 Racing is developed for dedicated motorsport applications, with damper construction, valve characteristics and configuration selected around the requirements of the racing vehicle.
Choose KW V4 Clubsport for a car that combines road use with regular track days. Choose KW V4 Racing for a dedicated track or competition build requiring a motorsport-specific suspension solution.
Refer to Key Details for vehicle compatibility, damping configuration, tyre specification and included components.
Models
2 Series
F87 M2 (2016-2021):
All models
3 Series
F80 M3 (2014-2019):
All models
4 Series
F82 / F83 (2014-2019):
All models
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