§ 01 / Part
PX4170 PISTON KIT ALUMINUM 66.00MM STANDARD
incl. VAT
Usually dispatched within 3 working days.
Authorised stockist
PROX
14-day returns
Easy & hassle-free
Secure checkout
256-bit encryption
§ 02 / About this part
What it is
The PROX PISTON KIT ALUMINUM 66.00MM STANDARD, motocross part. Stocked by Iron Offroad, the UK MX hard parts specialist.
This piston kit sits in the cylinder and is the primary moving part of your top-end. It is manufactured to precise tolerances to match your standard 66.00mm bore diameter. Replace this component at the recommended hour interval to avoid fatigue and potential cylinder damage. The kit includes the piston, rings, gudgeon pin, and circlips required for a standard top-end service. Measure your bore carefully to ensure you select the correct size for your current cylinder condition. This kit provides a reliable seal and restores the compression needed for peak engine performance.
§ 03 / Specs
The numbers
- Brand
- PROX
- Part number
- PX4170
- Weight
- 0.28 kg
- VAT
- 20%
// Fitment
Will it fit your bike?
Fits 4 models · 4 year-bands
Yamaha 4 models
No matches. Try a different make or model.
* Fitment data is provided as a guide. Verify compatibility against the bike's owner's manual or service handbook before ordering. Iron Offroad accepts no liability for incorrect application. Full terms and conditions apply.
§ 05 / About Iron Offroad
Iron Offroad
