The NIX 30 Street cartridge kit features new designed black top caps to give the bike a more subtle look. The “NIX” technology is developed from high level racing such as WSBK to deliver the utmost performance on road as well as on track. Changing to the NIX 30 street cartridge kit is easy. It fits bolt on in the standard fork legs and gives you adjustable compression and rebound damping separated in each leg, as well as preload adjustment, all accessible from the black top caps. The NIX 30 Street cartridge kits are delivered without springs. The springs need to be ordered separately to suite customer’s choice of spring rate.