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Polaris Sportsman 400 450 Ranger .040 Over Bore Piston Kit Namura
Description:
Upgrades engine displacement for improved compression and performance. Namura overbore kit designed for Polaris 400/450/ Ranger engines, providing enhanced power while maintaining reliability and durability.
Features:
- Specifically designed for Polaris Sportsman 400/450 and Ranger
- 0.040 bore increase for improved compression and torque
- Includes piston, rings, wrist pin, and circlips for a complete rebuild
Includes:
1 x Namura 0.040 overbore piston kit (piston, rings, wrist pin, circlips)
Fits Models:
Polaris Sportsman 400, Polaris Sportsman 450, Polaris Ranger
Model Years:
(n/a)
Submodels:
Sportsman 400, Sportsman 450, Ranger Utility
Engine Options:
0.040 overbore compatible with 400cc/450cc engines
040 Over Bore Piston Kit Namura for Polaris Sportsman 400 450 Ranger
Namura overbore kit, Polaris piston kit, Sportsman 400, Sportsman 450, Ranger, bore kit, performance upgrade, 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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