Vertex Piston Kit Ø66.40 B 09102553 for EC250 2002-14, 2018-19 MR250 2021

Name: Vertex Piston Kit Ø66.40 B 09102553 for EC250 2002-14, 2018-19 MR250 2021
Brand: VERTEX
SKU: 09102553
Price: 137.03 GBP
Availability: InStock

Fits 2 bikes

RRP £171.29 Save 20%

£137.03

incl. VAT

In stock — delivered in 6–10 working days

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

Part #: 09102553

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§ 02 / About this part

What it is

Vertex piston kit Ø66.40 B to fit the Gas Gas EC250, model years 2002–2014, 2018–2019, and Rieju MR250, model year 2021.

This B-size kit provides the correct tolerances for a cylinder that has worn past its initial A-spec. It sits in the engine and is essential for maintaining the compression needed for crisp throttle response. In 2-stroke engines, this component acts as a valve and is subject to significant wear from the ports. Replacing it at the recommended intervals prevents the assembly from slapping and damaging the cylinder walls. The kit includes the rings, pin, and clips. Verify your bore size with a dial gauge before installation. Always use fresh gaskets for the rebuild.

§ 03 / Specs

The numbers

Brand: VERTEX
Part number: 09102553
Category: Top End
Weight: 0.31 kg
VAT: 20%

// Fitment

Will it fit your bike?

Fits 2 models · 3 year-bands

Gas Gas 2 models

Rieju 1 model

MR 250 2021

* 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.