09100020 PISTON KIT ALUMINUM 47.45MM B

Name: PROX PISTON KIT ALUMINUM 47.45MM B
Brand: PROX
SKU: 09100020
Price: 78.37 GBP
Availability: InStock

Fits 2 bikes

£92.20 Save 15%

£78.37

incl. VAT

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Part #: 09100020

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§ 02 / About this part

What it is

The PROX PISTON KIT ALUMINUM 47.45MM B, top end. Stocked by Iron Offroad, the UK MX hard parts specialist.

This assembly is designed for precise maintenance on your small-bore bike. It includes the piston, rings, wrist pin, and circlips. The B-size designation is intended for cylinders with slight wear, providing a tighter clearance than a standard A-size. Measure your cylinder bore with a dial bore gauge to ensure this 47.45mm diameter is correct for your current setup. Regular component changes are critical to prevent ring land failure and maintain optimal power delivery. Always check ring end gap before final installation to ensure reliable operation under race conditions.

§ 03 / Specs

The numbers

Brand: PROX
Part number: 09100020
Category: Top End
Weight: 0.13 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 — this is a UK shop for motocross, enduro, and trail-bike hard parts. All fitments live on the site, and listed against MX models KTM, Husqvarna, GasGas, Yamaha, Honda, Kawasaki, Suzuki, and Beta. Pick your bike on the timing-tower. Our USP is in the data, fully enriched to assist with accurate fitting and finding the right part for your bike quickly and easily. 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 & e-moto only. We operate from our huge storage facility in Leeds. Iron Offroad is a trading name of Iron Stable Ltd, registered in Mildenhall — Company No. 17061294. We have a RICH motorcycle history with multiple moto brands the images showing where we came from and our history, the business recently pivoted into hard parts and online retail.