
§ 01 / Part
09104290 TOP END PISTON KIT
incl. VAT
Usually dispatched within 3 working days.
Authorised stockist
VERTEX
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§ 02 / About this part
What it is
The VERTEX TOP END PISTON KIT, motocross part. Stocked by Iron Offroad, the UK MX hard parts specialist.
This kit is essential for maintaining the integrity of your engine's top-end. It replaces the reciprocating assembly within the cylinder bore to restore lost compression. Regular replacement is necessary to prevent piston skirt failure and costly cylinder damage. The kit includes the piston, rings, gudgeon pin, and circlips. Ensure you clean the power valve assembly while the cylinder is removed. Check the small-end bearing for wear and replace if necessary. Follow the manufacturer's break-in procedure to ensure the rings seat correctly against the cylinder wall.
§ 03 / Specs
The numbers
- Brand
- VERTEX
- Part number
- 09104290
- Weight
- 0.28 kg
- VAT
- 20%
// Fitment
Will it fit your bike?
Fits 9 models · 10 year-bands
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
// VERTEX

