BC Racing Coilover BR 09-13 G37 Convertible

The BC Racing BR series coilovers are designed for street driving with occasional track use, providing a balanced and affordable aftermarket suspension system. They feature easily accessible adjustment knobs for 30 levels of combined compression/rebound damping and full ride height adjustability via the shock body (independent of spring compression). The kit includes 53mm diameter damper bodies with 46mm pistons. Many applications come with pillowball upper mounts (Japanese manufacture, aluminum alloy, anodized, bead blasted), with camber adjustable pillowball top mounts included where applicable. Springs are high-quality SAE9254 cold wound steel, compression tested over 500,000 cycles with minimal deformation. Components are corrosion-protected with black chromed steel damper units, anodized aluminum, and electrophoretic disposition/powder coating for steel lower mounts. They use high-quality oil for consistent viscosity and are nitrogen pressurized to reduce aeration and cavitation. Other features include a patented concave lower locking collar to prevent loosening and bearing-mounted upper spring platforms to minimize stiction. The coilovers are completely rebuildable, with individual parts available, and come with a 1-year manufacturer defect warranty. Optional upgrades include damper adjusting extenders, assister spring perches/springs, and pillowball top mount upgrades.