PROX PISTON KIT FORGED 76.97MM B

§ 01 / Part

09104543 PISTON KIT FORGED 76.97MM B

Fits Kawasaki KX 250 F
RRP £178.22 Save 20%
£142.58

incl. VAT

In stock — ships in 3 working days

Usually dispatched within 3 working days.

Part #: 09104543

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PROX

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§ 02 / About this part

What it is

The PROX PISTON KIT FORGED 76.97MM B, motocross part. Stocked by Iron Offroad, the UK MX hard parts specialist.

This forged component sits at the heart of your top-end rebuild. It converts combustion energy into mechanical drive. Over time, heat cycles wear the skirt and ring grooves, leading to compression loss. This B-size fitment accounts for minor cylinder bore wear. It serves as a direct alternative to OEM part 13001-0730. Always check your bore diameter with a micrometer before selection. Ensure the ring gaps are clocked correctly during assembly. Lubricate the wrist pin and small-end bearing thoroughly before sliding the cylinder over the rings.

§ 03 / Specs

The numbers

Brand
PROX
Part number
09104543
Weight
0.22 kg
OEM cross-refs
13001-0730
VAT
20%

// Fitment

Will it fit your bike?

Fits 1 model · 1 year-band

* 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