09100642 PISTON KIT FORGED Ø66,35mm

Name: ATHENA PISTON KIT FORGED Ø66,35mm
Brand: ATHENA
SKU: 09100642
Price: 118.56 GBP
Availability: InStock

Fits 2 bikes

RRP £142.84 Save 17%

£118.56

incl. VAT

In stock — ships in 3 working days

Usually dispatched within 3 working days.

Part #: 09100642

Authorised stockist

ATHENA

14-day returns

Easy & hassle-free

Secure checkout

256-bit encryption

§ 02 / About this part

What it is

The ATHENA PISTON KIT FORGED Ø66,35mm, top end. Stocked by Iron Offroad, the UK MX hard parts specialist.

This forged piston kit is designed for 250cc 2-stroke engines requiring a B-size fitment. The 66.35mm diameter is slightly larger than standard to compensate for minor cylinder wear and maintain optimal clearances. It sits in the top-end to drive the combustion cycle. Forged construction ensures the piston can handle the rigours of motocross and enduro racing. The kit includes the piston, rings, gudgeon pin, and circlips. Measure your bore accurately with a micrometer before fitting. Proper ring end-gap and small-end bearing lubrication are essential for a successful rebuild.

§ 03 / Specs

The numbers

Brand: ATHENA
Part number: 09100642
Category: Top End
Weight: 0.38 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.