BC Racing ER Series Coilovers feature large external reservoirs in the front and rear, separate rebound and compression adjustment, and a twin-piston design. The external reservoirs hold more oil than conventional coilovers, allowing the unit to operate for much longer before overheating. Additionally, the external reservoirs hours the secondary piston that allows for the adjustment of compression. This is the perfect coilover system for the driver who wants to fine-tune their setup using the separate 30-way rebound and compression tuning dials.
Still unsure? Check out the BC Racing Coilover Comparison we created.