Front sprockets are made from case-hardened nickel chromoly steel
Used by Honda, Suzuki, Kawasaki, Chaparral Yamaha, Pro Circuit/Splitfire/Kawasaki and Yamaha of Troy racing teams
At this time we are not able to specify on our website the standard tooth sizes of the sprockets or size and length of chain for your motorcycle. We will display every sprocket that fits. If you need the standard tooth size information or chain size and length, call us toll-free 800-969-7504
The sprocket has worn out in a normal woods trail riding environment in about 30 hours of riding. I have only had to adjust the chain tension once and the rear sprocket I am running has just barely noticeable wear. The case hardening is very shallow and the base metal is very malleable. It has resisted rusting pretty well.
If you are into replacing the front sprocket every 30 hours or so, this may be the one for you.
It would be worth it if it were $5.95. By the time that you went through 5 of them you would be ready for a whole new sprocket and chain set anyway.
My experience is the same as the other reviewer - teeth deformed after very low hours on a KTM 400 with a new chain. Not impressed with Renthal sprockets in general. Skip this one - the KTM factory sprockets last longer and are nearly the same price.