PROX PISTON KIT ALUMINUM 53.94MM A

§ 01 / Part

09102436 PISTON KIT ALUMINUM 53.94MM A

Fits 2 bikes
RRP £128.53 Save 20%
£102.82

incl. VAT

In stock — ships in 3 working days

Usually dispatched within 3 working days.

Part #: 09102436

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PROX

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§ 02 / About this part

What it is

The PROX PISTON KIT ALUMINUM 53.94MM A, motocross part. Stocked by Iron Offroad, the UK MX hard parts specialist.

This A-size kit serves as a direct alternative to OEM part 800099749. It is designed for 125cc cylinders in original condition or those with minimal hours. The aluminium construction manages heat effectively during high-RPM operation in the top-end. Refreshes are essential maintenance to avoid skirt failure and maintain peak power. Verify your bore size before fitting to ensure the 53.94mm diameter matches your cylinder requirements. Always use the provided new circlips and ensure they are fully seated. This kit includes the rings, gudgeon pin, and clips for a complete refresh.

§ 03 / Specs

The numbers

Brand
PROX
Part number
09102436
Weight
0.18 kg
OEM cross-refs
800099749
VAT
20%

// Fitment

Will it fit your bike?

Fits 2 models · 3 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.
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Free UK shipping over £100 14-day no-quibble returns OEM-grade parts only UK support · Tue–Fri 9–5, Sat 9–4 Race-shop prices, paddock service Collection from Leeds by arrangement
Free UK shipping over £100 14-day no-quibble returns OEM-grade parts only UK support · Tue–Fri 9–5, Sat 9–4 Race-shop prices, paddock service Collection from Leeds by arrangement