ATHENA TOP END GASKET KIT

§ 01 / Part

400485600115 TOP END GASKET KIT

Fits Yamaha YZ 125
RRP £17.18 Save 17%
£14.26

incl. VAT

In stock — ships in 3 working days

Usually dispatched within 3 working days.

Part #: 400485600115

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ATHENA

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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.

Essential for your next piston change or top-end inspection. This kit includes the head gasket, base gasket, and necessary O-rings for the cooling system. It seals the combustion chamber and prevents coolant migration into the bore. Replace these every time you remove the cylinder to maintain compression. Check your squish clearance when fitting the base gasket to ensure optimal performance. These parts meet exact factory dimensions for a reliable seal under race conditions. It is a standard requirement for your scheduled service intervals.

§ 03 / Specs

The numbers

Brand
ATHENA
Part number
400485600115
Category
Gaskets & Seals
Weight
0.06 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.
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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