Racers and Riders without these kits will be sucking hind nozzle, GAARONTEED ! BLOWOUT PRICE ONLY $150, REGULAR PRICE-$360 FREE SHIPPING INCLUDED!! 550 SX Standard Length Ultra light weight 1.75 pound. Reduces driven weight for quicker hole shot & acceleration. Less drivetrain weight = quicker throttle response. Replaceable splined ends. Super strong tubular stainless spring steel driveshaft cushions crankshaft from load shocks. Guaranteed not to break. | |||||||||