Home Honda CRF100 CRF100F XR100 XR100R 120cc / Big Bore Cylinder Kits

Honda CRF100 CRF100F XR100 XR100R 120cc / Big Bore Cylinder Kits

NOW $883.00
Or 4 interest-free payments of $220.75
In stock at 1 of our locations
🚛 Free NZ shipping
🔒 12 month warranty on all parts
NZ WOF compliant
🔧 Fitting available NZ wide

Description:
Upgrades displacement to 120cc for Honda CRF100/CRF100F/XR100/XR100R, boosting torque and peak HP. Includes gaskets and rings for a complete install; improves low-to-mid range power for better acceleration and rides with compatible crankcase and head components.

Features:
- Designed for Honda CRF100, CRF100F, XR100, XR100R
- 120cc big bore kit for enhanced performance
- Includes gasket set, rings, and install guide

Includes:
- 1 x 120cc Big Bore Cylinder Kit
- Gasket Set
- Piston Ring Set
- Install Guide

Fits Models:
Honda CRF100, CRF100F, XR100, XR100R

Model Years:
(omit if not available)

Submodels:
Standard, Optional: Race/Enduro variants (if applicable)

Engine Options:
120cc Big Bore

120cc / Big Bore Cylinder Kits for Honda CRF100 CRF100F XR100 XR100R

120cc, big bore, Honda, CRF100, XR100, performance, cylinder kit, upgrade

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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