Product Information "Piston RevUp Ø37.92 - for Simson SR4-1 Sparrow, SR1, SR2, KR50"
Piston RevUp
- perfect alternative to the standard or Barikit piston - no rattling, no pinging, very high durability - base size Ø37.92 - tolerance dimensions, conicity, and ovality specifically for gray cast iron cylinders - with piston pin and retaining clips - piston ring made of coated spheroidal graphite cast iron - piston ring height: 1.5mm - ring gap in the middle rear (top) or laterally rear (bottom)