PROX VALVE AND SPRING EXHAUST KIT

§ 01 / Part

09261034 VALVE AND SPRING EXHAUST KIT

Fits Kawasaki KX 450 F
RRP £149.81 Save 20%
£119.85

incl. VAT

In stock — ships in 3 working days

Usually dispatched within 3 working days.

Part #: 09261034

Authorised stockist

PROX

14-day returns

Easy & hassle-free

Secure checkout

256-bit encryption

§ 02 / About this part

What it is

The PROX VALVE AND SPRING EXHAUST KIT, motocross part. Stocked by Iron Offroad, the UK MX hard parts specialist.

This kit replaces the critical exhaust components in your cylinder head during a top-end rebuild. Extreme heat causes valve faces to cup and springs to lose their tension over time. This leads to poor sealing and lost compression. This kit includes steel valves and matched heavy-duty springs to restore factory performance. Steel components offer increased durability for enduro and trail use compared to standard titanium. Ensure your valve seats are professionally cut or checked for a perfect seal before installation. Always fit new stem seals to prevent oil consumption.

§ 03 / Specs

The numbers

Brand
PROX
Part number
09261034
Weight
0.13 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.
Iron Offroad Iron Offroad Iron Offroad Iron Offroad Iron Offroad
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