As used in SuperSport Championship...the NIX 30mm Road & Track cartridge kit gives your bike extra performance. It doesn't matter whether you are heading for a National road racing title or you are using your bike for your favorite road or track. This will give you that extra performance and comfort you need. The kit has a unique design with compression damping and adjustment in the left leg and rebound damping and adjustment in the right leg. All adjustments are made at the top together with the spring preload.