09100425 PISTON KIT ALUMINUM 76.96MM B

Name: PROX PISTON KIT ALUMINUM 76.96MM B
Brand: PROX
SKU: 09100425
Price: 142.05 GBP
Availability: InStock

Fits 2 bikes

RRP £177.56 Save 20%

£142.05

incl. VAT

In stock — ships in 3 working days

Usually dispatched within 3 working days.

Part #: 09100425

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§ 02 / About this part

What it is

The PROX PISTON KIT ALUMINUM 76.96MM B, motocross part. Stocked by Iron Offroad, the UK MX hard parts specialist.

B-size 76.96mm piston kit for the KX 250 F and RM-Z 250, the shared-platform 250 four-strokes. Cross-references OEM 13001-0052. Piston, rings, wrist pin and circlips included. B sizing suits a plated cylinder with light wear, holding piston-to-wall clearance without a replate. These engines live at high rpm and eat pistons on schedule; skipping the interval is how skirts collapse. Mic the bore first and check the Nikasil for peeling before you commit. Torque the head properly and follow the break-in so the rings seat.

§ 03 / Specs

The numbers

Brand: PROX
Part number: 09100425
Weight: 0.23 kg
OEM cross-refs: 13001-0052
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.