09102745 PISTON KIT ALUMINUM 84.50 MM +0.50MM

Name: PROX PISTON KIT ALUMINUM 84.50 MM +0.50MM
Brand: PROX
SKU: 09102745
Price: 105.94 GBP
Availability: InStock

Fits 8 bikes

£124.63 Save 15%

£105.94

incl. VAT

In stock — ships in 3 working days

Usually dispatched within 3 working days.

Part #: 09102745

Authorised stockist

PROX

14-day returns

Easy & hassle-free

Secure checkout

256-bit encryption

§ 02 / About this part

What it is

The PROX PISTON KIT ALUMINUM 84.50 MM +0.50MM, motocross part. Stocked by Iron Offroad, the UK MX hard parts specialist.

This oversized aluminium piston kit is designed for cylinders that have been bored out to remove damage or wear. It sits in the top-end and restores compression to factory levels. You must verify your cylinder diameter matches this specific +0.50mm oversize before ordering. Replacing the piston at recommended intervals prevents ovality in the bore and maintains power delivery. Check the ring gap in the freshly honed cylinder. Ensure the piston rings are oriented correctly according to the workshop manual. This kit includes the piston, rings, gudgeon pin, and circlips for a complete top-end refresh.

§ 03 / Specs

The numbers

Brand: PROX
Part number: 09102745
Weight: 0.56 kg
VAT: 20%

// Fitment

Will it fit your bike?

Fits 8 models · 8 year-bands

Yamaha 8 models

* 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.