Product Details

The KSport Circuit Pro 3 Way Adjustable Coilover Kit is the top of the KSport track-day ladder for the 1992-1998 BMW 3 Series. Three independent knobs separate high-speed compression, low-speed compression, and rebound — so you can control how the chassis reacts to curbs, how it settles through a fast sweeper, and how it recovers from a hard braking zone, all without touching the other two axes.

For serious BMW 3 Series track drivers and race teams, the Circuit Pro delivers the setup flexibility you need to get the absolute last tenth out of a lap. Remote reservoirs provide the oil volume and heat capacity required for long sessions, and the monotube design gives the consistent performance that makes your data meaningful. This is a full race coilover you can still dial back for the drive home.

Features

  • Built for racing
  • External reservoirs for independent rebound and compression adjustment
  • 11,664 possible tuning combinations
  • Stiffer spring rates and shock valving combined with 20-30mm shorter shock stroke
  • Upgraded bumpstops to prevent the shock from bottoming out over uneven pavement or harsh road conditions.
  • 36 levels of damping which allow you the ability to perfectly dial in your coilover system
  • Collars and upper mounts made from 6061 aluminum with T6 for increased hardness
  • Adjustable spring perch for height adjustment
  • All metal pillowball for added strength and responsiveness
  • Adjustable lower mount allowing maximum suspension travel
  • Monotube high pressure design for better performance and heat dissipation
  • Electroplated body for added protection from corrosion and rust

Specifications

Part Number CBM021-C3
Damping Adjustment 3-Way (High-Speed Compression, Low-Speed Compression, Rebound)
Height Adjustable Yes
Spring Rate (Front) 16.0 kg/mm (896 lbs/in)
Spring Rate (Rear) 18.0 kg/mm (1008 lbs/in)
Spring Type Linear
Top Mounts - Front Pillowball Mount with camber adjustment
Top Mounts - Rear Aluminum Mount no camber adjustment
Notes -

Important Fitment Note

RWD 323i, 325i, 328i

Vehicle fitment

This product fits the vehicles listed below.

YearMakeModelDrivetrainNotes
1992BMW318iRWD
1992BMW318isRWD
1992BMW323iRWD
1992BMW323isRWD
1992BMW325iRWD
1992BMW325isRWD
1992BMW328iRWD
1992BMW328isRWD
1993BMW318iRWD
1993BMW318isRWD
1993BMW323iRWD
1993BMW323isRWD
1993BMW325iRWD
1993BMW325isRWD
1993BMW328iRWD
1993BMW328isRWD
1994BMW318iRWD
1994BMW318isRWD
1994BMW323iRWD
1994BMW323isRWD

Customer Reviews

Questions & Answers