09103278 PISTON KIT ALUMINUM 53.95MM B

Name: PROX PISTON KIT ALUMINUM 53.95MM B
Brand: PROX
SKU: 09103278
Price: 109.02 GBP
Availability: InStock

Fits 2 bikes

RRP £136.28 Save 20%

£109.02

incl. VAT

In stock — ships in 3 working days

Usually dispatched within 3 working days.

Part #: 09103278

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§ 02 / About this part

What it is

The PROX PISTON KIT ALUMINUM 53.95MM B, motocross part. Stocked by Iron Offroad, the UK MX hard parts specialist.

This aluminum component is essential for maintaining 125cc performance. It sits at the top of the connecting rod and seals the combustion chamber. The B-sizing is intended for cylinders that have already run through an initial piston cycle. Regular replacement prevents skirt fatigue and bore damage. Check your ring end gap in the cylinder before installation. Ensure the locating pins for the rings are clear of any ports. Lubricate the pin and small-end bearing with two-stroke oil during assembly. This kit provides a direct alternative to factory parts.

§ 03 / Specs

The numbers

Brand: PROX
Part number: 09103278
Weight: 0.20 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.