VERTEX PISTON KIT Ø 89.00 B

§ 01 / Part

09101007 PISTON KIT Ø 89.00 B

Fits 8 bikes
RRP £220.31 Save 20%
£176.25

incl. VAT

In stock — ships in 3 working days

Usually dispatched within 3 working days.

Part #: 09101007

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VERTEX

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§ 02 / About this part

What it is

The VERTEX PISTON KIT Ø 89.00 B, motocross part. Stocked by Iron Offroad, the UK MX hard parts specialist.

Refresh your top-end to maintain the reliability of your large-bore engine. This kit sits in the cylinder and is responsible for converting combustion into drive. Four-stroke pistons face significant stress, and worn rings will eventually lead to oil burning and lost power. This B-size kit is designed to match cylinders with slight wear, providing a precise fit. It includes the piston, rings, gudgeon pin, and circlips. Confirm your cylinder is within tolerance using a bore gauge before installation. Always check ring end gap and ensure the piston is oriented correctly to prevent engine damage.

§ 03 / Specs

The numbers

Brand
VERTEX
Part number
09101007
Weight
0.40 kg
OEM cross-refs
78030007300
VAT
20%

// Fitment

Will it fit your bike?

Fits 8 models · 9 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