Athena Forged Piston Kit 09100669 Ø53.94 mm for EC 125 RACING 2013-15 YZ125 1997-2018

Name: Athena Forged Piston Kit 09100669 Ø53.94 mm for EC 125 RACING 2013-15 YZ125 1997-2018
Brand: ATHENA
SKU: 09100669
Price: 79.77 GBP
Availability: InStock

Fits 2 bikes

RRP £96.11 Save 17%

£79.77

incl. VAT

In stock — delivered in 6–10 working days

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

Part #: 09100669

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§ 02 / About this part

What it is

Athena forged piston kit Ø53.94 mm to fit Gas Gas EC 125 RACING (2013–2015); Yamaha YZ125 (1997–2018).

This forged piston kit sits in the top-end of your 125cc 2-stroke. The 53.94mm diameter is an A-size fitment for fresh or replated cylinders. Forged construction provides the durability needed for high-revving race engines. Replacing the piston at scheduled intervals prevents skirt failure and maintains peak power. The kit includes the piston, rings, gudgeon pin, and circlips. Ensure the arrow on the piston crown points toward the exhaust port during assembly. Proper ring end-gap measurement is critical for reliable operation and preventing bore damage.

§ 03 / Specs

The numbers

Brand: ATHENA
Part number: 09100669
Category: Top End
Weight: 0.26 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.