ProX Top-End Gasket Kit 09345709 for Yamaha WR400F 2000 WR426F 2001–2002 YZ426F 2000–2002

Name: ProX Top-End Gasket Kit 09345709 for Yamaha WR400F 2000 WR426F 2001–2002 YZ426F 2000–2002
Brand: PROX
SKU: 09345709
Price: 56.02 GBP
Availability: InStock

Fits 3 bikes

RRP £70.03 Save 20%

£56.02

incl. VAT

In stock — delivered in 6–10 working days

Dispatched in 2–3 working days · delivered in 6–10.

Part #: 09345709

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§ 02 / About this part

What it is

ProX top-end gasket kit to fit the Yamaha WR400F, model year 2000; Yamaha WR426F, model years 2001–2002; and Yamaha YZ426F, model years 2000–2002.

This top-end gasket kit is required for any service involving the cylinder or head. It provides the head gasket, base gasket, and necessary O-rings for the top section of your engine. These gaskets prevent compression loss and keep coolant out of the combustion chamber. You should replace the entire set every time the cylinder is removed. This kit is tailored for your specific bike to ensure all oil and water galleries align perfectly. Check your squish clearance after fitting the new base gasket. Proper preparation of the deck surface is vital for a reliable seal.

§ 03 / Specs

The numbers

Brand: PROX
Part number: 09345709
Category: Gaskets & Seals
Weight: 0.04 kg
VAT: 20%

// Fitment

Will it fit your bike?

Fits 3 models · 3 year-bands

Yamaha 3 models

* 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.