§ 01 / Part
Vertex Piston Kit Ø54.00 C 09102378 for Fantic XX125 2021 XE125 2021-22 Yamaha YZ125 2005-21 YZ125X 2020-22
incl. VAT
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VERTEX
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§ 02 / About this part
What it is
Vertex piston kit Ø54.00 C to fit Fantic XE125 (2021–2022); Fantic XX125 (2021); Yamaha YZ125 (2005–2021); Yamaha YZ125X (2020–2022).
This top-end component sits at the centre of your engine's combustion cycle. It requires regular replacement to maintain peak compression and prevent skirt fatigue. Most workshop manuals specify replacement intervals based on race hours or visible wear on the coating. The specific sizing increments allow you to match the piston to your cylinder's actual bore diameter as it wears over time. Each kit includes the necessary rings, wrist pin, and circlips for a complete top-end rebuild. Always verify your ring end gap and ensure the piston crown arrow points toward the exhaust port during assembly.
§ 03 / Specs
The numbers
- Brand
- VERTEX
- Part number
- 09102378
- Category
- Top End
- Weight
- 0.18 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
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