VERTEX PISTON KIT Ø 39.50 B

§ 01 / Part

09102173 PISTON KIT Ø 39.50 B

Fits 2 bikes
£55.94 Save 15%
£47.55

incl. VAT

In stock — ships in 3 working days

Usually dispatched within 3 working days.

Part #: 09102173

Authorised stockist

VERTEX

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§ 02 / About this part

What it is

The VERTEX PISTON KIT Ø 39.50 B, top end. Stocked by Iron Offroad, the UK MX hard parts specialist.

This kit restores compression. It improves engine response. It sits inside your cylinder bore. Regular service intervals prevent skirt fatigue and catastrophic failure. The lettered sizing allows for precise clearance as your cylinder bore wears over time. Measure your bore with a micrometer to confirm the correct fitment for your bike. The kit includes the rings, gudgeon pin, and circlips. Check your ring gap during the rebuild. Ensure circlips are fully seated. Note the arrow orientation toward the exhaust port. Lubricate the small-end bearing and cylinder wall before your first heat cycle.

§ 03 / Specs

The numbers

Brand
VERTEX
Part number
09102173
Category
Top End
Weight
0.10 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 — this is a UK shop for motocross, enduro, and trail-bike hard parts. All fitments live on the site, and listed against MX models KTM, Husqvarna, GasGas, Yamaha, Honda, Kawasaki, Suzuki, and Beta. Pick your bike on the timing-tower. Our USP is in the data, fully enriched to assist with accurate fitting and finding the right part for your bike quickly and easily. 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 & e-moto only. We operate from our huge storage facility in Leeds. Iron Offroad is a trading name of Iron Stable Ltd, registered in Mildenhall — Company No. 17061294. We have a RICH motorcycle history with multiple moto brands the images showing where we came from and our history, the business 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-based support · 9 to 5 Race-shop prices, paddock service Click & collect from Leeds
Free UK shipping over £100 14-day no-quibble returns OEM-grade parts only UK-based support · 9 to 5 Race-shop prices, paddock service Click & collect from Leeds