Bob Ardecky
Encinitas, CA
428 Chain
My son races supermini RM105's and this chain holds up real well with the added power. His motor was built by PR2 and he can run with most 250 4 stroke bikes at local California tracks. There is no lack of power in this motor; this chain would be a great addition for any RM 85 or YZ85 out there.
Bob