885M04350 Wiseco Std Piston Kit 43.50 mm for Yamaha YZ65 2018-2024

Piston Kit for Yamaha YZ65

This Wiseco 885M04350 piston kit is a standard bore 43.50 mm top-end assembly that restores compression and performance on Yamaha YZ65 models from 2018 to 2024, with the OEM cross-reference 885M04350 identifying the correct replacement.

Overview

This Wiseco piston kit for Yamaha YZ65 machines is a standard bore 43.50 mm top-end component built to refresh a worn cylinder. The 885M04350 kit provides a forged piston with rings, wrist pin, and circlips so the YZ65 top end can be rebuilt in a single job. It suits mini motocross riders and mechanics maintaining Yamaha YZ65 engines that need a reliable standard piston kit.

Built For Performance

• Wiseco forged piston construction for strength under two-stroke combustion loads
• Standard 43.50 mm bore size to match an unworn or lightly honed cylinder
• Kit includes piston, rings, wrist pin, and circlips for a complete top-end refresh
• Engineered for the Yamaha YZ65 2018 to 2024 applications
• Standard sizing maintains factory piston-to-cylinder clearance

Fits These Machines

• for Yamaha YZ65, 2018-2024

On-The-Job Use

• Top-end rebuilds on Yamaha YZ65 mini motocross bikes
• Routine piston replacement during race season maintenance
• Engine refresh when compression has dropped from piston wear
• Workshop repairs requiring a standard bore replacement piston

Specs At A Glance

Good To Know

Q: Does this piston kit fit an oversize cylinder? A: No, this is a standard 43.50 mm piston, so it matches an unworn or lightly honed factory bore. Confirm your cylinder bore size and clearance spec before ordering.

Q: What is included in the kit? A: The kit includes the piston along with rings, wrist pin, and circlips for a complete top-end assembly. Verify all components against your machine before assembly.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.