09103427 PISTON KIT FORGED 101.95MM B

Name: PROX PISTON KIT FORGED 101.95MM B
Brand: PROX
SKU: 09103427
Price: 164.37 GBP
Availability: InStock

Fits 13 bikes

£193.38 Save 15%

£164.37

incl. VAT

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Part #: 09103427

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§ 02 / About this part

What it is

The PROX PISTON KIT FORGED 101.95MM B, top end. Stocked by Iron Offroad, the UK MX hard parts specialist.

This forged piston kit is essential for your next top-end overhaul. It sits in the cylinder bore to maintain primary compression and power delivery. Forged components offer superior structural integrity under high heat compared to cast parts. The B-size fitment provides a tighter tolerance for cylinders that have seen moderate use. Regular replacement prevents piston slap and potential damage to the cylinder plating. Ensure the ring gaps are checked and the circlips are seated correctly during the build. Follow your service manual for break-in procedures to seat the rings properly.

§ 03 / Specs

The numbers

Brand: PROX
Part number: 09103427
Category: Top End
Weight: 0.55 kg
VAT: 20%

// Fitment

Will it fit your bike?

Fits 13 models · 13 year-bands

Yamaha 13 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.