PROX PISTON KIT ALUMINUM 66.35MM A1

§ 01 / Part

09101188 PISTON KIT ALUMINUM 66.35MM A1

Fits Honda CR 250 R
RRP £149.38 Save 20%
£119.50

incl. VAT

In stock — ships in 3 working days

Usually dispatched within 3 working days.

Part #: 09101188

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PROX

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§ 02 / About this part

What it is

The PROX PISTON KIT ALUMINUM 66.35MM A1, motocross part. Stocked by Iron Offroad, the UK MX hard parts specialist.

Refresh your top-end to maintain peak performance and prevent skirt failure. This A1-size kit is designed for fresh or low-hour cylinders, matching the original factory tolerances. It cross-references with OEM part 13110-KSK-730. During installation, ensure the circlips are seated fully in the grooves to avoid major internal damage. Frequent replacement is standard practice for race-tuned engines to ensure the bore remains within spec. The kit provides the rings, wrist pin, and clips needed for the job. Always lubricate the pin and small-end bearing with fresh oil during the rebuild process.

§ 03 / Specs

The numbers

Brand
PROX
Part number
09101188
Weight
0.32 kg
OEM cross-refs
13110-KSK-730
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