Product Details

BC Racing ER Series Coilovers for the 2006-2011 BMW 3-Series E90 put race-grade adjustability in reach of the serious track-day driver, with independent compression and rebound tuning at every corner. Every kit is extensively tested on the 3-Series E90 chassis and refined until it balances ride quality with performance — the reason 3-Series E90 coilovers from BC Racing are the best-selling adjustable kits in their segment worldwide.

ER Series kits run a linear twin-piston design in a mono-tube body, with compression and rebound on separate external adjusters. That lets you fine-tune chassis balance corner by corner — stiffer front for turn-in, softer rear for exit grip, whatever the session calls for. BC Racing takes pride in choosing spring rates and damper valving that balance comfort and performance — you never end up with the oversprung, harsh-riding kit some brands ship as their only option. Drivers who want to deviate from the factory setup can order Swift Springs, custom spring rates, and custom valving at checkout; BC will re-valve the dampers to match whatever you specify, a level of customization most brands reserve for their top-tier race kits.

BC Racing has been manufacturing adjustable coilovers since 2004 and is one of the most popular coilover brands in the automotive tuning industry for a reason: competitive pricing, deep customization, proven reliability, and a fully rebuildable damper design that lasts years instead of seasons. These 3-Series E90 coilovers arrive tuned for the 3-Series 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 (top of damper)
• 30-level compression adjustment (external reservoir)
• 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

Vehicle Fitment

• 2006 BMW 3-Series E90 RWD
• 2007 BMW 3-Series E90 RWD
• 2008 BMW 3-Series E90 RWD
• 2009 BMW 3-Series E90 RWD
• 2010 BMW 3-Series E90 RWD
• 2011 BMW 3-Series E90 RWD