PROX VALVE AND SPRING INTAKE KIT

§ 01 / Part

09261031 VALVE AND SPRING INTAKE KIT

Fits Kawasaki KX 450 F
RRP £149.52 Save 20%
£119.62

incl. VAT

In stock — ships in 3 working days

Usually dispatched within 3 working days.

Part #: 09261031

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PROX

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§ 02 / About this part

What it is

The PROX VALVE AND SPRING INTAKE KIT, motocross part. 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
09261031
Weight
0.18 kg
VAT
20%

// Fitment

Will it fit your bike?

Fits 1 model · 1 year-band

* 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

Iron Offroad is the off-road sibling of Iron City and Iron Stable — a UK shop for motocross, enduro, and trail-bike hard parts. Every fitment lives on the site, listed against KTM, Husqvarna, GasGas, Yamaha, Honda, Kawasaki, Suzuki, and Beta. Pick your bike on the timing-tower. Our USP is the data: fully enriched fitment so you find the right part for your bike quickly and get it fitted accurately. Brands you'd find on a paddock workbench — pads, sprockets, plastics, fork seals, cables, gaskets, bars, the things that actually wear out. Road-bike kit, scooter parts, and quad gear sit elsewhere; dirt and e-moto only. We operate from our storage facility in Leeds. Iron Offroad is a trading name of Iron Stable Ltd, registered in Mildenhall — Company No. 17061294. The business has a rich motorcycle history across multiple moto brands — the photos show where we came from — and recently pivoted into hard parts and online retail.
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Free UK shipping over £100 14-day no-quibble returns OEM-grade parts only UK support · Tue–Fri 9–5, Sat 9–4 Race-shop prices, paddock service Collection from Leeds by arrangement
Free UK shipping over £100 14-day no-quibble returns OEM-grade parts only UK support · Tue–Fri 9–5, Sat 9–4 Race-shop prices, paddock service Collection from Leeds by arrangement