F8X M2/M3/M4 Rear Kinematics Kit

The GKTech F8X M2/M3/M4 Kinematics kit is a unique rear suspension geometry solution for BMW M2, M3, and M4 models.

Lowering your vehicle negatively effects roll center, bump steer and the toe curve. That is where the GK Kinematics Kit is beneficial, improving the roll center and camber geometry to more track focused values for a lowered vehicle.

This change does slightly flatten the rear toe curve, making it less aggressive. However, by pairing the Kinematics Kit and our bump steer adjustable toe arms, you can lower the toe arm position using the supplied spacers to correct the toe curve or even a more aggressive one, ensuring more predictable handling and drivability.

This can be seen in the comparison graphs in the product photos!

Kinematics Kit

This kit has been engineered through 3D scanning/ modeling and repositions the toe arm pickup points to restore optimal geometry while maintaining OEM-like handling feel.

Features:

• Increased negative camber for more aggressive alignment options

• Reduced roll moment arm for minimized body roll

• Adjustable bump steer and roll center correction through eccentric design

• Spherical bearings reduce bush deflection and provide smooth suspension travel

• CNC Machined 6061-T6 aluminum body

• COM10T PTFE-lined self-lubricating spherical bearings for longevity

Adjustable Toe Arms

The bump steer adjustable toe arms allow adjustment of rear toe and bump steer to adjust the vehicles rear toe, as well as complement the geometry changes introduced by the Kinematics Kit.

Features:

• High-quality 5/8" Teflon-lined pillow ball rod ends for direct steering feedback

• 28mm OD, 3mm wall 4130 chromoly construction with CNC-machined ends

• TIG welded and e-coated for a durable finish

• Adjustable bump steer correction up to 4mm using included shims

• CAD-designed and FEA-tested

Vehicle Compatibility

• BMW F80 M3 / M3 Competition

• BMW F82 / F83 M4 / M4 Competition

• BMW F87 M2 / M2 Competition

• BMW G80 M3 / M3 Competition

• BMW G82 M4 / M4 Competition

Both the kinematics kit and suspension arms are sold as a pair.

Note: The Kinematics Kit must be used with GKTech Adjustable Toe Arms (included in this package).