Namura Standard Bore Size A Top End Repair Kit for Yamaha YZ65 2018-2024 43.5mm

Namura Standard Bore Size A Top End Repair Kit for Yamaha YZ65

This Namura Standard Bore Size A Top End Repair Kit is a complete replacement top-end assembly for Yamaha YZ65 motorcycles, covering model years 2018 through 2024 and featuring a 43.5mm bore size.

Overview

The Namura Standard Bore Size A Top End Repair Kit for Yamaha YZ65 provides all necessary components to rebuild the cylinder and piston assembly for 2018-2024 YZ65 models. This top end repair kit includes a piston, rings, wrist pin, and circlips, ensuring your 43.5mm bore engine delivers consistent compression and power. Designed as a direct replacement, it restores performance to factory specifications.

Built For Performance

• 43.5mm bore piston matched to stock cylinder dimensions
• Includes premium ring set for optimal seal and longevity
• Heat-treated wrist pin and circlips for secure installation
• Precision-machined to Namura's quality standards
• Compatible with original Yamaha cylinder and head components
• Kit contains all wear items needed for a complete top-end rebuild

Fits These Machines

• for Yamaha YZ65 (2018, 2019, 2020, 2021, 2022, 2023, 2024 models)

On-The-Job Use

• Motocross racing and practice sessions
• Enduro and off-road competition
• Youth bike maintenance and rebuilds
• Restoring compression after hours of use
• Seasonal engine overhauls

Specs At A Glance

Good To Know

Q: Does this kit include a cylinder or gaskets? A: This top end repair kit supplies the piston, rings, wrist pin, and circlips only; you will need to reuse your existing cylinder or purchase a separate cylinder and gasket set for a full rebuild.

Q: Can I use this kit on a Yamaha YZ65 from before 2018? A: This kit is specifically engineered for 2018-2024 YZ65 models with a 43.5mm bore; earlier YZ65 models may have different bore sizes or porting, so check your year and serial number before ordering.

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