09103437 PISTON KIT ALUMINUM 55.94MM A

Name: PROX PISTON KIT ALUMINUM 55.94MM A
Brand: PROX
SKU: 09103437
Price: 110.79 GBP
Availability: InStock

Fits 2 bikes

RRP £138.49 Save 20%

£110.79

incl. VAT

In stock — ships in 3 working days

Usually dispatched within 3 working days.

Part #: 09103437

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§ 02 / About this part

What it is

The PROX PISTON KIT ALUMINUM 55.94MM A, top end. Stocked by Iron Offroad, the UK MX hard parts specialist.

This aluminum piston kit is the standard choice for your next top-end service. It sits inside the cylinder bore, converting combustion into mechanical force. The A-size grading is for fresh bores or cylinders with minimal wear. Over time, 2-stroke pistons suffer from skirt wear and ring groove deformation, leading to lost compression. This kit includes the rings, pin, and circlips required for a full swap. Clean the power valve assembly thoroughly while the cylinder is off. Stick to your race-shop service schedule to avoid catastrophic failure during a moto.

§ 03 / Specs

The numbers

Brand: PROX
Part number: 09103437
Category: Top End
Weight: 0.21 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.