Wiseco HIGH-PERFORMANCE PISTONS from Barton Powersports
Red book racing (LSR, Canada) look on facebook , sleeved down a 250/4 Yam, using Wiseco pistons (special order low comp), the same Wiseco pistons folks tell you are NOT available in small sizes (forged) the above piston size table tells a different story
Maybe slight mods would be needed in the valve pocket dept, but late model 50/80cc 4 valve single pistons look promising ?
Has anyone tried these in their engine?
Piston Piston Rings for CBR250 MC22 Size Std 4sets | eBay
Yup, I'm using them now,,,,,,,,,,,,,,,
Tiny