CBF82-3101 – Caster Adjuster Assembly – F80 82 83 87 M3 M4 M2C


The CarBahn Front Caster Adjuster Kit replaces the rubber bushing in the stock thrust arm, resulting in improved braking stability with reduced tendency to follow ruts in the road (especially with wider wheels and tires), additionally allowing for Caster angle adjustments.

CarBahn Autoworks is proud to announce the Caster Adjuster Assemblies for the F8X BMW M3/M4 models.

The CarBahn Autoworks Caster Adjuster Assembly replaces the rubber bushings in the stock thrust arms with sealed precision ball joints inside machined aluminum housings. As a result of eliminating the deflection that is inherent in rubber bushings, braking stability is improved, and the tendency for the car to follow ruts in the road (especially with wider wheels and tires) is reduced. As an added benefit, the bearings are mounted eccentrically to give an adjustable caster range.

The bearings inside the Caster Adjuster are nylon-lined for quiet operation, and are sealed against water and debris intrusion for longevity.

Estimated Installation Time: 2.5 hours


  • 2015-2019 BMW M3 Sedan
  • 2015-2019 BMW M4 Coupe
  • 2015-2019 BMW M4 Convertible
  • 2016-2018 BMW M3 Competition Sedan
  • 2016-2018 BMW M4 Competition Coupe
  • 2016-2019 BMW M4 GTS Coupe
  • 2018-2019 BMW M3 CS Sedan
  • 2018-2019 BMW M4 CS Coupe
  • 2019-2020 BMW M2 Competition Coupe


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