BC Racing ER-Series Coilovers (F-17-ER) 15960 High-Flow GESI Catalytic Converter: Reduces

High-Flow GESI Catalytic Converter: Reduces backpressure and increases exhaust flow

Dry Boiling Point: 312C/594F

Dyno Proven gains of up to 8 hp and 10 lb-ft

Built for performance and show

which keeps the engine clean while optimizing power delivery

BC Racing ER-Series Coilovers (F-17-ER) 15960 High-Flow GESI Catalytic Converter: ReducesOur 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