BC Racing ER Series Coilovers 2015-2021 Impreza STI / WRX (VAB / VAF / VAG)

BC Racing ER Series Coilovers for the 2015-2021 Subaru WRX STI (VA2) 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 WRX STI VA2 chassis and refined until it balances ride quality with performance — the reason WRX STI 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 WRX STI coilovers arrive tuned for the VA2 chassis and ready to bolt in — no break-in period, no guessing at setup.

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