Wiseco Steel Exhaust Valve 09260261 for Yamaha WR400F 1998–2000 YZ400F 1998–1999 YZ426F 2000

Name: Wiseco Steel Exhaust Valve 09260261 for Yamaha WR400F 1998–2000 YZ400F 1998–1999 YZ426F 2000
Brand: WISECO
SKU: 09260261
Price: 22.98 GBP
Availability: InStock

Fits 3 bikes

RRP £28.73 Save 20%

£22.98

incl. VAT

In stock — delivered in 6–10 working days

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

Part #: 09260261

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§ 02 / About this part

What it is

Wiseco steel exhaust valve to fit Yamaha WR400F (1998–2000); Yamaha YZ400F (1998–1999); Yamaha YZ426F (2000).

These steel valves are designed for riders looking for extended service intervals over OEM titanium parts. They operate in the top-end of your engine and provide a more stable seal against the valve seat. Replace these during a scheduled top-end refresh or if you notice a loss of compression. Because steel is heavier than titanium, you must verify your spring rates to prevent valve float at high RPM. These are precision-machined to match OEM dimensions for a straightforward install. Always lap the valves into the seats for a perfect seal.

§ 03 / Specs

The numbers

Brand: WISECO
Part number: 09260261
Category: Top End
Weight: 0.05 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.