BC Racing ER-Series Coilovers (I-13-ER) 1653 BM9-HDG4 kit features ACT's most

BM9-HDG4 kit features ACT's most popular Heavy Duty pressure plate

Direct fit for the 2002-2006 Acura RSX L4-2

The clear coat finish provides a ‘wet’ look with excellent transparency and durability

MZ031X is an ACT Xtreme pressure plate that uses exclusive diaphragm design to increase clamp load

Works With 12 Volt Systems

BC Racing ER-Series Coilovers (I-13-ER) 1653 BM9-HDG4 kit features ACT's mostOur newest and most advanced model yet is the ER series coilover. It features large external reservoirs front and rear, separate rebound and compression adjustment and a twin piston design. The external reservoirs hold much more oil than the conventional coilovers, allowing the coilover to operate for a much longer period of time before overheating. The external reservoirs also house the secondary piston, which allows for the adjustment of