
§ 01 / Part
09261025 VALVE AND SPRING EXHAUST KIT
incl. VAT
Usually dispatched within 3 working days.
Authorised stockist
PROX
14-day returns
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§ 02 / About this part
What it is
The PROX VALVE AND SPRING EXHAUST KIT, top end. Stocked by Iron Offroad, the UK MX hard parts specialist.
The top-end of a high-performance four-stroke endures massive thermal and mechanical stress. This kit replaces worn valves and tired springs to restore compression and valve train stability. Over many hours, valves can cup or stretch, while springs lose the tension required to prevent valve float at high revs. Installing these components together ensures the valve face seals perfectly against the seat. This is a direct replacement for OEM parts during a major engine overhaul. Ensure the valve seats are inspected and cut if necessary before installation. Fresh springs are vital for maintaining timing accuracy and protecting your engine.
§ 03 / Specs
The numbers
- Brand
- PROX
- Part number
- 09261025
- Category
- Top End
- Weight
- 0.09 kg
- VAT
- 20%
// Fitment
Will it fit your bike?
Fits 15 models · 18 year-bands
Gas Gas 1 model
Yamaha 17 models
- WR 450 F 2003–2015
- YFZ 450 2004–2009
- YFZ 450 2012–2014
- YFZ 450 BB 2006–2007
- YFZ 450 LE 2004
- YFZ 450 R 2009–2025
- YFZ 450 RSE 2009–2025
- YFZ 450 SE 2005
- YFZ 450 SE 2007
- YFZ 450 SP 2006
- YFZ 450 SP 2008
- YFZ 450 SP2 2008
- YFZ 450 SPE2 2007
- YFZ 450 X 2010–2011
- YFZ 450 XBB 2010
- YFZ 450 XSE 2011
- YZ 450 F 2003–2009
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
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// PROX
