.020 Over Bore / 39.5mm / Piston & Gasket for Yamaha YFZ50 (2017–2025)

020 Over Bore / 39.5mm / Piston & Gasket for Yamaha YFZ50 (2017-2025)

Includes:
1 x 39.5mm piston kit with rings; 1 x gasket set

Fits Models:
Yamaha YFZ50

Model Years:
2017 - 2025

Submodels:
All YFZ50 trims

Engine Options:
49cc single-cylinder, 4-stroke

Description:
Bores the Yamaha YFZ50 to 39.5mm for increased displacement and improved throttle response. Includes piston kit with rings and gasket set for reliable rebuild and better engine sealing. Designed for compatibility with 2017–2025 YFZ50 models.

Features:
- Specifically engineered for Yamaha YFZ50 2017–2025
- 39.5mm overbore to boost performance
- Includes piston with rings and gasket set for complete refresh

Yamaha YFZ50 bore kit, 39.5mm piston, overbore kit, ATV engine parts, 2017-2025, piston and gasket, Yamaha ATV internals