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Polaris Namura 40mm .040 Over Bore Top End Kit (2007–2019)
Description:
Namura 40mm overbore top-end kit increases displacement and improves compression for Polaris engines, delivering better power output and restoration of performance during rebuilds.
Features:
- 40mm oversize piston for Polaris engines
- Includes rings, wrist pin, circlips, gaskets
- Designed for compatible 40mm bore top-end rebuilds
- Ideal for restoring power in 2007-2019 Polaris models
Includes:
1 x Namura 40mm .040 over bore top-end kit (piston, rings, wrist pin, circlips, gaskets)
Fits Models:
Polaris
Model Years:
2007-2019
Submodels:
All Polaris ATV/UTV models using a 40mm bore top end
Engine Options:
Polaris engine platforms compatible with 40mm oversize top end kits
Namura 40mm .040 Over Bore Top End Kit for Polaris (2007–2019)
Namura, Polaris, top-end kit, overbore, 40mm, piston kit, performance, rebuild
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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