PISTON KIT 99-25 YZ250 66.40, WISECO 804M06640B PRO-LITE

Part No. 56-W742.B.WI (oro2u.com)

Fantic    
XX 250    2022-2023

Yamaha    
YZ 250    1999-2025
YZ 250 X    2016-2025

Overview of Wiseco Pro-Lite Piston Assembly - 804M06640
Durability, longevity and increased horsepower Innovative forging design and piston skirt provide maximum horsepower and torque

Lightweight wrist pins enable faster revs and quicker throttle response Ceramic Composite-Cylinder sleeving or replating required for oversizes Top-End bearing available-part no. B1003
Included Items: One 66.4mm piston Two 2614CD rings

Two CW18 circlips One S508 wrist pin
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.