§ 01 / Part
09104302 PISTON KIT TOP END Ø 47.5 A
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 TOP END Ø 47.5 A, motocross part. Stocked by Iron Offroad, the UK MX hard parts specialist.
Restore lost compression and engine response with this top-end kit. It sits at the heart of your engine, converting combustion into mechanical drive. Over time, ring tension fades and skirt wear increases, leading to blow-by or piston slap. This A-size fitment suits fresh cylinders or those within tight OEM tolerances. Check your ring end gap before final assembly. Always use a new small-end bearing and fresh gaskets during the rebuild. Regular service intervals prevent catastrophic failure and maintain the sharp power delivery your bike needs for the track.
§ 03 / Specs
The numbers
- Brand
- VERTEX
- Part number
- 09104302
- Weight
- 0.34 kg
- VAT
- 20%
// Fitment
Will it fit your bike?
Fits 2 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
