Originally Posted by PeteN95
I know, reading Thumpertalk about those CRF horror stories used to scare me! But the valves stayed in spec and it was 8 years till I ran out of thinner intake valve shims. The clutch plates lasted 8 years too, with a Rekluse autoclutch. Now I did only race Supermoto one of those years, the rest was trail riding and some track days. I really think the combo of leaded fuel and not hitting the rev limiter was the secret.
Wow!!! every 13 months on the 450R valves and 3 months on the 250f's for me, Honda clutches were bullet proof