VERTEX PISTON KIT Ø 66.40 D

§ 01 / Part

09102307 PISTON KIT Ø 66.40 D

Fits Kawasaki KX 250
RRP £138.78 Save 20%
£111.02

incl. VAT

In stock — ships in 3 working days

Usually dispatched within 3 working days.

Part #: 09102307

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VERTEX

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§ 02 / About this part

What it is

The VERTEX PISTON KIT Ø 66.40 D, motocross part. Stocked by Iron Offroad, the UK MX hard parts specialist.

This assembly is the core of your engine rebuild. It sits within the cylinder bore to maintain compression and power delivery. Regular swaps are essential to prevent skirt fatigue or ring failure. This D-grade sizing compensates for significant cylinder bore wear. Always verify your bore diameter with a dial bore gauge before selection to ensure the correct clearance. Check your ring gap and ensure circlips are seated correctly in the grooves. Follow OEM torque settings for the head and base gaskets to finish the job.

§ 03 / Specs

The numbers

Brand
VERTEX
Part number
09102307
Weight
0.33 kg
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