The YZF link requires less effort to initiate turn-in, improves handling mid-corner and it keeps the bike tracking straight in whoops allowing the rider to be more aggressive. It also keeps the back end planted in breaking bumps. A by product of this link is that it lowers the back of the motorcycle 10-12mm depending on year. It comes complete with bearings, seals and the steel roller bushing. Recommended sag with the Rideng Link is 102-106mm.