Home Yamaha Kodiak / Grizzly 400 Namura 85mm 020 Over Bore Top End (2000–2008)

Yamaha Kodiak / Grizzly 400 Namura 85mm 020 Over Bore Top End (2000–2008)

NOW $471.00
Or 4 interest-free payments of $117.75
In stock at 1 of our locations
🚛 Free NZ shipping
🔒 12 month warranty on all parts
NZ WOF compliant
🔧 Fitting available NZ wide

Description:
Namura 85mm over bore top end kit increases displacement for improved power and torque, renewing worn top-end components. Designed for Yamaha Kodiak/Grizzly 400 models from 2000–2008 to restore performance and reliability.

Features:
- Specifically designed for Yamaha Kodiak/Grizzly 400 (2000-2008)
- 85mm oversize piston kit for enhanced compression and power
- Includes essential gaskets and hardware for installation

Includes:
- 1 x 85mm piston kit
- Rings
- Wrist pin
- Circlips
- Gaskets (head and base)

Fits Models:
- Yamaha Kodiak 400
- Yamaha Grizzly 400

Model Years:
2000-2008

Submodels:
Kodiak 400 4x4, Kodiak 400 2x4, Grizzly 400 4x4, Grizzly 400 2x4

Engine Options:
399cc OHV 4-stroke (single cylinder)

Namura 85mm Over Bore Top End Kit for Yamaha Kodiak/Grizzly 400 (2000-2008)

Namura, 85mm, over bore, top end, piston kit, Yamaha Kodiak, Yamaha Grizzly, 400, 2000-2008

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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