BC Racing ER Series Coilovers for 1992-1999 BMW M3 True Rear RWDBC Racing ER Series Coilovers for the 1992 1999 BMW M3 True Rear 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 M3 True Rear chassis and refined until it balances ride quality with performance the reason M3 True Rear coilovers from BC Racing are the best selling adjustable kits in their segment worldwide. ER Series kits run a