Athena Gasket Kit for Athena Cylinder Kit 09341578 for Yamaha YZ125 2005–2021 YZ125X 2020–2021

Name: Athena Gasket Kit for Athena Cylinder Kit 09341578 for Yamaha YZ125 2005–2021 YZ125X 2020–2021
Brand: ATHENA
SKU: 09341578
Price: 39.19 GBP
Availability: InStock

Fits 2 bikes

RRP £47.22 Save 17%

£39.19

incl. VAT

In stock — delivered in 6–10 working days

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

Part #: 09341578

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§ 02 / About this part

What it is

Athena gasket kit for Athena cylinder kit to fit Yamaha YZ125 (2005–2021); Yamaha YZ125X (2020–2021).

These gaskets are specifically designed for use with an aftermarket cylinder kit. Do not use standard OEM gaskets as the bore diameter and coolant port alignment may differ. This kit provides the necessary head and base gaskets to seal the top end correctly. It is essential when performing a top-end refresh on an engine already fitted with the matching cylinder. Proper squish clearance depends on these specific base gasket thicknesses. Clean the cylinder and head surfaces thoroughly to ensure a reliable seal under high compression.

§ 03 / Specs

The numbers

Brand: ATHENA
Part number: 09341578
Category: Gaskets & Seals
Weight: 0.09 kg
VAT: 20%

// Fitment

Will it fit your bike?

Fits 2 models · 2 year-bands

* 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.