Whether heading for a National Road Race title or just taking your bike to the local race track, the cartridge kit offers adaptability, stability, and a superior performance. This kit has a unique design where the left fork leg controls the compression damping and the right controls rebound damping. This allows not only for a more precise function and better stability, but also the for possibility of having all adjustments conveniently placed at the top of the fork with the spring preload adjusters. The cartridge kit is easy to install in most standard Hypersport front forks. Note! This kit requires springs and oil which are sold separately. The 08790-series of front fork springs are available to order separately to suit the rider’s choice of spring rate.