09101200 PISTON KIT ALUMINUM 84.00MM +1.00MM

Name: PROX PISTON KIT ALUMINUM 84.00MM +1.00MM
Brand: PROX
SKU: 09101200
Price: 119.8 GBP
Availability: InStock

Fits 18 bikes

£140.94 Save 15%

£119.80

incl. VAT

In stock — ships in 3 working days

Usually dispatched within 3 working days.

Part #: 09101200

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§ 02 / About this part

What it is

The PROX PISTON KIT ALUMINUM 84.00MM +1.00MM, top end. Stocked by Iron Offroad, the UK MX hard parts specialist.

Use this 1.00mm oversize kit for cylinders requiring a significant rebore to clear deep scoring or heavy wear. It provides a fresh start for your top-end without the expense of a new barrel. This kit replaces OEM part 5UH-11631-00-C0. Precise machining is vital to ensure the correct piston-to-wall clearance. The kit includes the rings, wrist pin, and circlips. After boring, ensure the ports are chamfered to prevent ring snagging. This is a workshop-level job that restores compression and extends the service life of your engine. Always verify the final bore diameter before assembly.

§ 03 / Specs

The numbers

Brand: PROX
Part number: 09101200
Category: Top End
Weight: 0.46 kg
OEM cross-refs: 5UH-11631-00-C0
VAT: 20%

// Fitment

Will it fit your bike?

Fits 18 models · 21 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 — 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.