PROTON WIRA (TRACK) 100%Original HWL MT1-BS Series High-Low Soft Hard Adjustable * 24 Steps Soft Hard (Rebound adjustment by detachable soft-hard knob) * High-Low (High-low adjustment by spring perch) * Bodyshift (Ride height adjustment by body-shift housing) * Coil Spring (Coil spring is featured with all series except SH. SH is designed to use OEM spring) * Fully Serviceable (Screw type top close cap to allow disassembly) * Twin Tube Structure Design (Twin tube technology, inner tube and shell case) * 1 Year Warranty HWL MT1-BS Series Features: - 24 Steps Rebound Adjustment - Adjustable Housing For Ride Height Adjustment - Adjustable Spring Perch For Spring Compression "Advanced performance coilover for car enthusiast, engineered and tuned to its finest for outstanding performance. 24-step of adjustable rebound, with adjustable spring and body height. Transforming your everyday driving experience into an extraordinary one, making the journey never the same as before."