Home Kawasaki KFX50 & Suzuki Quadrunner 50 0.040 Over Bore Piston Kit

Kawasaki KFX50 & Suzuki Quadrunner 50 0.040 Over Bore Piston Kit

NOW $156.00
Or 4 interest-free payments of $39.00
In stock at 1 of our locations
🚛 Free NZ shipping
🔒 12 month warranty on all parts
NZ WOF compliant
🔧 Fitting available NZ wide

Description:
Precise 0.040 overbore kit designed to restore compression and enhance performance on KFX50 and Quadrunner 500 engines. Ideal for recoats, rebuilds, or restoring lost power, offering improved low- to mid-range torque and consistent throttle response. Includes essential components for a ready-to-install upgrade.

Features:
- Specifically engineered for Kawasaki KFX50 and Suzuki Quadrunner 500
- Restores compression with reliable bore size
- Complete kit with pistons, rings, pins, circlips, and gaskets
- Supports improved durability and engine response

Includes:
- 1 x 0.040 Over Bore Piston Kit
- Rings, pin, and circlips
- Gasket set (if applicable)

Fits Models:
- Kawasaki KFX50
- Suzuki Quadrunner 500

Engine Options:
- Kawasaki 50cc 4-stroke
- Suzuki 500cc 4-stroke

0.040 Over Bore Piston Kit for Kawasaki KFX50 & Suzuki Quadrunner 500

0.040 over bore piston kit, Kawasaki KFX50, Suzuki Quadrunner 500, OEM-style rebuild, engine performance, small displacement rebuild, bore kit, 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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