Twin Air Powerflow-Kit Replacement Pre-Oiled Backfire Air Filter 10110581 for Yamaha WR250F WR400F WR426F YZ 450 F SP YZ250F YZ450F

Name: Twin Air Powerflow-Kit Replacement Pre-Oiled Backfire Air Filter 10110581 for Yamaha WR250F WR400F WR426F YZ 450 F SP YZ250F YZ450F
Brand: TWIN AIR
SKU: 10110581
Price: 17.66 GBP
Availability: InStock

Fits 6 bikes

RRP £20.78 Save 15%

£17.66

incl. VAT

In stock — delivered in 6–10 working days

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

Part #: 10110581

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§ 02 / About this part

What it is

Twin Air Powerflow-kit replacement pre-oiled backfire air filter to fit Yamaha WR250F (2001–2002); Yamaha WR400F (1998); Yamaha WR426F (2001–2002); Yamaha YZ 450 F SP (2006); Yamaha YZ250F (2001–2013); Yamaha YZ450F (2003–2009).

This replacement filter is specifically for the aluminium Powerflow cage system. It includes a layer of flame-resistant foam to protect against backfires, allowing the removal of the OEM backfire screen. This modification increases airflow to the intake for improved engine performance. The filter comes pre-oiled and ready to fit. It provides a precise seal against the upgraded frame to prevent any dirt bypass. Regularly swapping this filter is essential for maintaining the gains provided by the high-flow intake kit.

§ 03 / Specs

The numbers

Brand: TWIN AIR
Part number: 10110581
Category: Air Filters
Weight: 0.08 kg
VAT: 20%

// Fitment

Will it fit your bike?

Fits 6 models · 6 year-bands

Yamaha 6 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.