BC-Racing Suspension, BR Series for SUBARU IMPREZA GDB 00-07 (NOT STI 05+)

The BR series coil overs use a large 46mm diameter piston in a 53mm diameter damper body to maximize oil capacity. As the damper unit operates the oil contained within heats up. The viscosity of oil changes as its temperature varies which can lead to changes in the damping characteristics of the unit.

BC Racing only use a very high-quality oil with their coil overs but go that extra mile to maximize performance and build their BR range with a large 53mm diameter damper body. This increases the capacity of the unit which increases the volume of oil contained which in turn reduces the peak temperature and so significantly improves damper performance.