THIS IS A NEW WISECO RACER ELITE 14:1 HIGH COMPRESSION STD 76.80MM BORE PISTON KIT, PART# RE825M09700. IT WILL FIT THE FOLLOWING:

2020-2022 YAMAHA YZ450F

2021-2023 YAMAHA WR450F

2021-2022 YAMAHA YZ450FX

KIT INCLUDES PISTON, RINGS, WRIST PIN AND 2 CLIPS