WISECO 87.5mm PISTON KIT YAMAHA YZ490 1982-1984, IT490 1983-1984

Part No. 56-W478+0.50.WI
YAMAHA YZ490 1982-1983,
YAMAHA IT490 1983-1984,
Overview of Wiseco Piston Assembly - 478M08750 Wiseco forged pistons are superior in strength and design We carry the full line of Wiseco forged pistons, big bore kits and related items

Top-End bearing available-part no. B1014
Piston Rings part no. 3445TD

Our pistons, rings and kits are sold by application and bore size. Please note that STANDARD and OVERSIZES are not indicated. To get the correct part, you must know the standard bore size to make sure you are ordering either the standard or correct amount of oversize that you need. If you have any questions, please call Technical Service.