BC Racing ER Series Coilovers for 2013-2020 Lexus GS350 RWD (L10)BC Racing ER Series Coilovers for the 2013 2020 Lexus GS350 (L10) 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 GS350 L10 chassis and refined until it balances ride quality with performance the reason GS350 coilovers from BC Racing are the best selling adjustable kits in their segment worldwide. ER Series kits run a linear