09100967 PISTON KIT REPLICA BB Ø 58.00 A

Name: VERTEX PISTON KIT REPLICA BB Ø 58.00 A
Brand: VERTEX
SKU: 09100967
Price: 133.5 GBP
Availability: InStock

Fits Yamaha YZ 125

RRP £166.87 Save 20%

£133.50

incl. VAT

In stock — ships in 3 working days

Usually dispatched within 3 working days.

Part #: 09100967

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§ 02 / About this part

What it is

The VERTEX PISTON KIT REPLICA BB Ø 58.00 A, motocross part. Stocked by Iron Offroad, the UK MX hard parts specialist.

This 58.00mm (A) component is designed for big-bore top-end configurations. It sits in the cylinder to increase displacement and torque across the rev range. Because it operates in a high-stress environment, regular inspection and replacement are necessary to avoid skirt failure. Ensure your cylinder is plated and honed to match this specific diameter before installation. Check the ring gaps and confirm the circlips are securely locked into the gudgeon pin bore. This kit includes the piston, rings, pin, and clips required for your engine upgrade or maintenance cycle.

§ 03 / Specs

The numbers

Brand: VERTEX
Part number: 09100967
Weight: 0.19 kg
VAT: 20%

// Fitment

Will it fit your bike?

Fits 1 model · 1 year-band

Yamaha YZ 125 2005–2019

* 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.