BC Racing ER-Series Coilovers (J-02-ER) 1523 no leak seal over the

no leak seal over the life of the filter

Whiteline's bump stops replace those worn OE bump stops with a bushing that will last

The Only Direct Bolt-IN BCS for MS3

Made with fiberglass and proprietary vacuum infusion process to ensure proper fit and finish

Air velocity is accelerated through the system as it smoothly transitions to the factory back tube where the system either connects directly to the factory MAF housing

BC Racing ER-Series Coilovers (J-02-ER) 1523 no leak seal over theOur 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