09105309 PISTON KIT

Name: PROX PISTON KIT
Brand: PROX
SKU: 09105309
Price: 144.38 GBP
Availability: InStock

Fits 2 bikes

RRP £180.47 Save 20%

£144.38

incl. VAT

In stock — ships in 3 working days

Usually dispatched within 3 working days.

Part #: 09105309

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§ 02 / About this part

What it is

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

Restore lost compression and engine response with this top-end kit. It sits at the heart of your engine, converting combustion into mechanical drive. Over time, ring tension fades and skirt wear increases, leading to blow-by or piston slap. This fitment suits fresh cylinders or those within tight OEM tolerances. Check your ring end gap before final assembly. Always use a new small-end bearing and fresh gaskets during the rebuild. Regular service intervals prevent catastrophic failure and maintain the sharp power delivery your bike needs for the track.

§ 03 / Specs

The numbers

Brand: PROX
Part number: 09105309
Weight: 0.23 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.