Part No. 56-W939+000.WI
YAMAHA PW80 1983-2006,
YAMAHA BW80 1986-1988, 1990,
YAMAHA YB/TY/PW80 -3E5-,
Overview of Wiseco High-Performance Piston Assembly -

649M04700,
Wiseco forged pistons are superior in strength and design We carry a full line of Wiseco forged pistons, big bore kits and related items For top-end bearing order part B1042 number Cylinder boring require for oversizes
Included Items:

One 47mm piston Two 1850CD rings Two CW12 circlips One S538 wrist pin

1990 Yamaha BW80 Big Wheel