400485100008 CYLINDER KIT RACE 125cc 54mm STANDARD BORE

Name: ATHENA CYLINDER KIT RACE 125cc 54mm STANDARD BORE
Brand: ATHENA
SKU: 400485100008
Price: 618.72 GBP
Availability: InStock

Fits Yamaha YZ 125

RRP £745.45 Save 17%

£618.72

incl. VAT

In stock — ships in 3 working days

Usually dispatched within 3 working days.

Part #: 400485100008

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§ 02 / About this part

What it is

The ATHENA CYLINDER KIT RACE 125cc 54mm STANDARD BORE, motocross part. Stocked by Iron Offroad, the UK MX hard parts specialist.

Restore lost power or replace a damaged bore with this standard diameter cylinder. It sits at the heart of your top-end rebuild. The kit replaces a seized or worn factory unit with a fresh plated surface. It includes the piston, rings, and gaskets needed for the swap. This is a direct fitment for your 125cc engine. Proper heat cycles are required after installation to bed in the new components. It provides a reliable alternative to factory replacements when your original bore is beyond repair.

§ 03 / Specs

The numbers

Brand: ATHENA
Part number: 400485100008
Weight: 2.19 kg
VAT: 20%

// Fitment

Will it fit your bike?

Fits 1 model · 1 year-band

Yamaha YZ 125 2001–2004

* 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.