§ 01 / Part
09106733 PISTON KIT YZ125/WR125 22- 55.
incl. VAT
Usually dispatched within 3 working days.
Authorised stockist
VERTEX
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§ 02 / About this part
What it is
The VERTEX PISTON KIT YZ125/WR125 22- 55., top end. Stocked by Iron Offroad, the UK MX hard parts specialist.
This kit handles the heavy lifting in your top-end. It operates within the cylinder bore, managing compression and combustion cycles. Rings lose tension and skirts wear thin through constant heat cycles, making a scheduled rebuild essential to prevent cylinder damage. This kit includes the piston, rings, gudgeon pin, and circlips. Select your sizing—A, B, C, or D—based on your current cylinder bore measurement to ensure correct tolerances. Always clean the power valve assembly and inspect the small-end bearing during the swap. Proper lubrication of the pin and rings is vital for the initial start-up.
§ 03 / Specs
The numbers
- Brand
- VERTEX
- Part number
- 09106733
- Category
- Top End
- Weight
- 0.20 kg
- VAT
- 20%
// Fitment
Will it fit your bike?
Fits 4 models · 4 year-bands
Fantic 2 models
Yamaha 2 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
// Related
