09101475 PISTON KIT ALUMINUM 54.20MM B

Name: PROX PISTON KIT ALUMINUM 54.20MM B
Brand: PROX
SKU: 09101475
Price: 100.31 GBP
Availability: InStock

Fits 2 bikes

RRP £125.39 Save 20%

£100.31

incl. VAT

In stock — ships in 3 working days

Usually dispatched within 3 working days.

Part #: 09101475

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§ 02 / About this part

What it is

The PROX PISTON KIT ALUMINUM 54.20MM B, top end. Stocked by Iron Offroad, the UK MX hard parts specialist.

This B-size kit is for 125cc-class cylinders that have moved beyond the initial A-size fitment. It sits in the top-end, providing a 54.20mm diameter to maintain optimal clearance as the bore wears. Regular servicing with the correct size prevents power loss and potential seizure. Check the cylinder for any scoring or ovality before installation. Ensure the ring end gaps are within spec. Orient the piston crown arrow toward the exhaust port. This kit is essential for keeping your engine performing at its best during race or trail use.

§ 03 / Specs

The numbers

Brand: PROX
Part number: 09101475
Category: Top End
Weight: 0.18 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.