Product Details

BC Racing ZX Series Coilovers for the 2006-2011 BMW 3 Series Sedan (E90) bring the same three-axis adjustability as the race-spec ZR Series with valving tuned for drivers who split time between street and track. Every kit is extensively tested on the E90 chassis and refined until it balances ride quality with performance — the reason 3 Series Sedan coilovers from BC Racing are the best-selling adjustable kits in their segment worldwide.

ZX Series kits share the three-axis damper architecture of the race-spec ZR Series, tuned out of the box for drivers who want race-grade adjustability without the ride harshness on the commute home. Where BC Racing separates itself is tuning philosophy: every off-the-shelf spring rate and damper setup is chosen to stay comfortable on daily roads while still delivering real performance at the track. If you want something different, Swift Springs, custom rates, and custom valving are all options at checkout — BC will match the valving of the dampers to whatever springs you pick, something most brands don't offer outside their flagship race lineup.

BC Racing's reputation in the aftermarket suspension world is built on four things: competitive pricing that beats the rest of the fully-adjustable market, customization depth that rivals the top-tier race brands, long-term reliability earned over 20 years of production, and a rebuildable design that keeps the same set of dampers serving you through multiple builds. These 3 Series Sedan coilovers arrive tuned for the E90 chassis and ready to bolt in — no break-in period, no guessing at setup. Every kit ships with a 2-year manufacturer warranty, lifetime access to BC service parts (pistons, seals, shafts — no unit replacement required when it's time for a rebuild), and in-house tech support from both BC Racing and the Springrates team.

Features

  • 30-level rebound adjustment
  • 15-level low-speed compression adjustment
  • 12-level high-speed compression adjustment
  • Inverted mono-tube damper with linear twin-piston design
  • Ride height adjustable independent of spring preload
  • Upper mount hardware varies by chassis — camber plates, pillowball, or reused OEM mounts. See the Specifications table for what's included on your kit.
  • Swift Spring and custom spring rate upgrades available at checkout
  • Custom damper valving paired with custom spring rates on request
  • Fully rebuildable — replacement parts available from BC for the life of the shock
  • 2-year manufacturer warranty against defects
Specifications
Part Number I-03-ZX
Part Name ZX Series Coilovers
Vehicle 2006-2011 BMW 3 Series Sedan
Drivetrain RWD
Chassis Code E90
Damping Adjustment 3-Way (30 levels rebound/15 LSC/12 HSC)
Ride-Height Adjustable Yes
Spring Rate - Front 5.5 kg/mm
Spring Rate - Rear 9 kg/mm
Spring Size - Front 62-170-5.5K
Spring Size - Rear 62-230-9K
Swift Springs - Front 62-152-X
Swift Springs - Rear 62-228-X
Camber Plates - Front Included
Camber Plates - Rear Not Applicable
Suspension Design - Front True Coilover
Suspension Design - Rear Divorced
Notes
  • Pillowball Rear Top Mounts are not available
  • The ZX Series is not available in Extreme-Low configuration.
Vehicle Fitment
  • 2006 BMW 3 Series Sedan RWD (E90)
  • 2007 BMW 3 Series Sedan RWD (E90)
  • 2008 BMW 3 Series Sedan RWD (E90)
  • 2009 BMW 3 Series Sedan RWD (E90)
  • 2010 BMW 3 Series Sedan RWD (E90)
  • 2011 BMW 3 Series Sedan RWD (E90)

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