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Yamaha 660 Raptor, Grizzly & Rhino 101mm Namura .040 Over Bore Piston Kit
Description:
Upgraded piston kit for Yamaha 660 engines to restore compression after overbore, improving power, efficiency, and reliability for ATV/UTV use.
Features:
- 101mm oversize piston for 660cc engines
- Includes rings, pin, and clips
- Designed for Raptor 660, Grizzly 660, Rhino 660
Includes:
- 1 x Namura .040 Over Bore Piston Kit (101mm)
- Piston rings
- Wrist pin
- Circlips
Fits Models:
- Yamaha Raptor 660
- Yamaha Grizzly 660
- Yamaha Rhino 660
Model Years:
- (omit if not found)
Submodels:
- Raptor 660, Grizzly 660, Rhino 660
Engine Options:
- 660cc
Namura .040 Over Bore Piston Kit 101mm for Yamaha 660 ATV
Namura piston kit, Yamaha 660, Raptor 660, Grizzly 660, Rhino 660, overbore, 101mm, ATV parts
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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