400485600254 TOP END GASKET KIT

Name: ATHENA TOP END GASKET KIT
Brand: ATHENA
SKU: 400485600254
Price: 17.65 GBP
Availability: InStock

Fits 3 bikes

£20.76 Save 15%

£17.65

incl. VAT

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Usually dispatched within 3 working days.

Part #: 400485600254

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§ 02 / About this part

What it is

The ATHENA TOP END GASKET KIT, gaskets & seals. Stocked by Iron Offroad, the UK MX hard parts specialist.

Seal the top-end of your bike correctly during every piston change or cylinder inspection. This kit includes the head, base, and exhaust seals required to maintain primary compression. These components replace heat-cycled parts that degrade over a race season. Fitment matches OEM specifications for your specific bore and stroke. Ensure all mating surfaces are scraped clean and degreased before you install the new parts. For four-stroke builds, seating the valve stem seals correctly prevents oil blow-by. This is a standard workshop requirement to prevent coolant migration and pressure loss in the combustion chamber.

§ 03 / Specs

The numbers

Brand: ATHENA
Part number: 400485600254
Category: Gaskets & Seals
Weight: 0.06 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 — this is a UK shop for motocross, enduro, and trail-bike hard parts. All fitments live on the site, and listed against MX models KTM, Husqvarna, GasGas, Yamaha, Honda, Kawasaki, Suzuki, and Beta. Pick your bike on the timing-tower. Our USP is in the data, fully enriched to assist with accurate fitting and finding the right part for your bike quickly and easily. 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 & e-moto only. We operate from our huge storage facility in Leeds. Iron Offroad is a trading name of Iron Stable Ltd, registered in Mildenhall — Company No. 17061294. We have a RICH motorcycle history with multiple moto brands the images showing where we came from and our history, the business recently pivoted into hard parts and online retail.