Product Details

The KSport Asphalt Rally AR Coilover Kit is engineered for the abuse of tarmac rally stages and hard-driven back roads — exactly the conditions that break softer street coilovers on the 2009-2016 BMW Z4. Inverted monotube shocks, extended stroke, heavy-duty internals, and large shock bodies mean more oil volume, better heat dissipation, and the kind of durability that survives a weekend of stage driving.

For BMW Z4 owners chasing points on tarmac or just wanting a coilover that doesn't fade after a spirited drive, the Asphalt Rally AR delivers the consistency real competition demands. Full ride-height adjustment and fine damping control give you the range to build a setup around your tires, your tarmac, and your driving style.

Features

  • Rally AR Spec coilover kits are designed specifically for asphalt rally competition.
  • Inverted steel shock absorber for increased response and heat dissipation
  • Large 55mm shock bodies and increased shock fluid volume for better cooling
  • Heavy duty steel lower mounts for stronger protection under aggressive track driving
  • All metal pillowball for added strength and responsiveness
  • 36-way adjustable damping
  • Collars and upper mounts made from 6061 aluminum with T6 for increased hardness
  • Adjustable spring perch for height adjustment
  • Camber adjustment on many
  • Monotube high pressure design for better performance and heat dissipation
  • Electroplated body for added protection from corrosion
  • Dust boot to protect damper seal

Specifications

Part Number CBM290-AR
Damping Adjustment 36-Way
Height Adjustable Yes
Spring Rate (Front) 12.0 kg/mm (672 lbs/in)
Spring Rate (Rear) 9.5 kg/mm (532 lbs/in)
Spring Type Linear
Top Mount (Front) Pillowball Mount with camber adjustment
Top Mount (Rear) Reuses OEM Top Mount
Notes Ksport Electronic Damping Cancellation Kit EDCBM290 available for this application

Vehicle Fitment

  • 2009 BMW Z4
  • 2010 BMW Z4
  • 2011 BMW Z4
  • 2012 BMW Z4
  • 2013 BMW Z4
  • 2014 BMW Z4
  • 2015 BMW Z4
  • 2016 BMW Z4

Important Fitment Note

sDrive28i, sDrive30i, sDrive35i

Reviews / Q&A

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