BC Racing ER Series Coilovers for 2017+ Audi A4/S4 FWD/AWD (B9) 48.5mm Front Strut 1 Series BC Racing RM Series Coilovers

BC Racing RM Series Coilovers for the 2003-2008 Subaru Forester (SG) are purpose-built for McPherson-strut cars that see serious track time

BC Racing DS Series Coilovers for the 2017+ Audi A4 (B9) blend street-tuned ride quality with track-ready adjustability

build quality

BC Racing HM Series Coilovers for the 2006-2011 Honda Civic (FG/FA) combine the inverted-damper durability of the RM Series with the independent compression and rebound tuning of the ER Series — BC's pick for track-day McPherson-strut builds

2021 Mazda CX-30 AWD (DMEP)

BC Racing ER Series Coilovers for 2017+ Audi A4/S4 FWD/AWD (B9) 48.5mm Front Strut 1 Series BC Racing RM Series CoiloversBC Racing ER Series Coilovers for the 2017+ Audi A4 S4 (B9) 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 A4 S4 B9 chassis and refined until it balances ride quality with performance the reason A4 S4 coilovers from BC Racing are the best selling adjustable kits in their segment worldwide. ER Series kits run a linear twin