Athena Gasket Kit for Athena Cylinder Kit 09343117 for Yamaha YZ125 1997–2004

Name: Athena Gasket Kit for Athena Cylinder Kit 09343117 for Yamaha YZ125 1997–2004
Brand: ATHENA
SKU: 09343117
Price: 43.83 GBP
Availability: InStock

Fits Yamaha YZ 125

RRP £52.81 Save 17%

£43.83

incl. VAT

In stock — delivered in 6–10 working days

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

Part #: 09343117

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§ 02 / About this part

What it is

Athena gasket kit for Athena cylinder kit to fit Yamaha YZ125 (1997–2004).

These gaskets are specifically sized for your aftermarket cylinder setup. They differ from standard OEM dimensions to accommodate the revised bore or porting. Use these when performing routine maintenance or replacing the piston in your existing kit. The base gasket sets your squish clearance, which is critical for engine timing and detonation control. Always measure your squish after installation to confirm the tolerances. Keep the mating surfaces dry and clean during the build. This ensures the seals hold under high-rev race conditions.

§ 03 / Specs

The numbers

Brand: ATHENA
Part number: 09343117
Category: Gaskets & Seals
Weight: 0.09 kg
VAT: 20%

// Fitment

Will it fit your bike?

Fits 1 model · 1 year-band

Yamaha YZ 125 1997–2004

* 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.