about 20k on
sunstar steel sprockets on a '98 srad 600. with a 525 RK XSO chain. chain was used with 2-3k on it, and stored for 2 yrs. When I got it, i put it on with all new steel sprockets, it stretched when I first put it on, and ones again. So for 20k, this lube is working really well. _________________________________ 2000 Kawi zx6r 525 did chain.... about 22k on that ...