PROX PISTON KIT

§ 01 / Part

ProX Piston Kit 09105309 for Honda CRF250R 2018–2019 CRF250RX 2019

Fits 2 bikes
RRP £180.47 Save 20%
£144.38

incl. VAT

In stock — delivered in 6–10 working days

Dispatched in 2–3 working days · delivered in 6–10.

Part #: 09105309

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PROX

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§ 02 / About this part

What it is

ProX piston kit to fit the Honda CRF250R, model years 2018–2019, and Honda CRF250RX, model year 2019.

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
Category
Top End
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.
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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 ✦