this is a brand new usa made APE manual camchain tensioner for the kawasaki ZRX1200/1100 ZZR1100,zx10 and klr600,a must on tuned or hard ridden bikes,unlike the stock tensioners they cannot back of with the risk of damage,like the std tensioners. easy to install. beware of cheap copies! we stock many ape/wiseco/dyna/web/vance and hines products for the older kawasaki models see our other listings