The New BWR SS Coilover feature's a wide range of height adjustments without changing the spring compression and sacrificing the shock stroke. Traditional Coilovers requires the movement of the spring perch to determine the ride height, causing a reduction in suspension travel and induce coil spring binding. The bottom shock fork / connector is threaded to allow height adjustments to each drivers need without having to shorten the suspension travel by maintaining the original spring perch location. With this function, each driver can lower the center of gravity to achieve better handling, without sacrificing ride quality. BWR SS TYPE SUSPENSION SPECS: SS provides height adjustments, damping force not adjustable suspension on the SS version (for dampning force check out the GT series.). Alloy forged aluminum correspondent with anodized finish brackets, spring seats and upper mounts (Some BWR suspension's DO NOT! come with upper mounts.) WARRANTY: BWR offers a 1 Year Warranty SPRING RATES: Front 10KG (560lbs) Rear 6KG (336lbs) COMES WITH 6061 ALUMINUM UPPER MOUNTS!!