PISTON KIT 81-20 PW50 40.50, WISECO 653M04050 YAMAHA

Part No. 56-W938+050.WI (oro2u.com)
YAMAHA PW50 1981 - 2012 (PeeWee),
Wiseco High-Performance Piston Assembly - 653M04050
Wiseco forged pistons are superior in strength and design We carry the full line of Wiseco forged pistons, big bore kits and related items

Cylinder boring required for oversizes
Two CW10 circlips One S630 wrist pin