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Yamaha YFZ50 .020 Over Bore / 39.5mm / Piston & Gasket (2017–2025)
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
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
020 Over Bore / 39.5mm / Piston & Gasket for Yamaha YFZ50 (2017-2025)
Yamaha YFZ50 bore kit, 39.5mm piston, overbore kit, ATV engine parts, 2017-2025, piston and gasket, Yamaha ATV internals
Shipping Information
Most orders land in 5–12 business days. We'll keep you updated at every step of the journey.
The Kren Bits journey:
- Order received — Day 0
- With fulfilment — Day 1–2
- Heading to courier — Day 2–4
- Shipped — Day 3–7
- Almost there — Day 5–10
- Delivered — Day 5–14
Where your part ships from:
Your order ships from the closest warehouse with available stock across our six-warehouse network — NZ, AU, TH, UK, US, and CN.
We email you at every real milestone — order received, with fulfilment, heading to courier, shipped, almost there, delivered. No chasing, no vague waits.
For more details, visit our Track Your Order page.
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