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Fall-Line Motorsports

Fall-Line Motorsports F8X M2 / M3 / M4 Front Monoball Conversion Kit - V2

Regular price $423.00 USD
Regular price Sale price $423.00 USD
Sale Unavailable


Fall Line’s monoball spherical bearing conversion kit transforms the front steering and suspension feel of the M3/4. The factory rubber bushing is very large, and is prone to substantial deflection under load, as the M4 is put through its paces. Deflection of the bushing can create unwanted geometry change, steering wobble under braking, and even hysteresis of the thrust arm.

The bearing’s housing is precision machined from aluminum, to create a rigid part that allows for the M4’s thrust arm to move smoothly through its range of suspension travel. The improvement in steering and suspension feel is immediate and truly enhances the personality of the F8x.

*V2 improved design also incorporates hard coat clear anodized finish* 


  • F87 M2
  • F80 M3
  • F82 M4

Cross Reference: FLM-F87-1BUNI