Product Description FASTACE 10″ BDA-01AR / BS-22AR 250-LBS. REAR RACING SHOCK. Brand New Light weight, ergonomic, adjustable rebound, easy turn adjustable spring pre-load, nitrogen-charged, oil damping with internal floating piston, service friendly This is top of the line Shock made from reputable FASTACE at 250 lbs. capacity, not those $30 mickey mouse shocks others are selling. Specifications: Aluminum Alloy Spring is Adjustable HD Steel End Piece Length: 10″ eye to eye length SPRING RATE: 250 LBS Adjustable rebound F (fast) and S (slow) at the bottom of the shock This is ideal shock for pit bike, ATV, scooter, beach buggy and Yamaha 4 wheel golf cart.