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Yamaha YFZ50 Namura 40mm Over Bore Piston Kit (2017–2025)
Description:
Upgrade for Yamaha YFZ50 to 40mm overbore for increased displacement, throttle response, and top-end power. Engine components are designed for durability and compatibility with stock rods and seals, improving overall performance and ride experience.
Features:
- Designed for Yamaha YFZ50 2017-2025
- 40mm overbore for higher displacement and power
- Complete piston kit with rings, pin, clips, and gaskets
- Maintains reliable operation with stock tolerances
Includes:
- 1 x Namura 40mm Over Bore Piston Kit (piston, rings, pin, circlips, gaskets)
Fits Models:
- Yamaha YFZ50
Model Years:
- 2017-2025
Submodels:
- All YFZ50 ATV variants
Engine Options:
- 49cc single-cylinder
Namura 40mm Over Bore Piston Kit for Yamaha YFZ50
namura, piston kit, Yamaha YFZ50, overbore, ATV, performance, engine upgrade
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.
Product Enquiry
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