09102455 PISTON KIT ALUMINUM 78.50MM STANDARD

Name: PROX PISTON KIT ALUMINUM 78.50MM STANDARD
Brand: PROX
SKU: 09102455
Price: 89.22 GBP
Availability: InStock

Fits 4 bikes

£104.96 Save 15%

£89.22

incl. VAT

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Usually dispatched within 3 working days.

Part #: 09102455

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§ 02 / About this part

What it is

The PROX PISTON KIT ALUMINUM 78.50MM STANDARD, motocross part. Stocked by Iron Offroad, the UK MX hard parts specialist.

This standard-size kit is a direct alternative to OEM part 13101-HN5-670. It sits in the top-end, restoring the factory-spec seal and compression for your bike. The aluminium construction provides reliable heat dissipation for consistent performance. Regular piston replacement is a key part of engine maintenance, preventing the wear that leads to oil consumption and power loss. This 78.50mm kit includes the rings, gudgeon pin, and circlips. Ensure the cylinder bore is clean and within factory limits before installation. Always use new gaskets when reassembling the top-end to ensure a leak-free seal.

§ 03 / Specs

The numbers

Brand: PROX
Part number: 09102455
Weight: 0.35 kg
OEM cross-refs: 13101-HN5-670
VAT: 20%

// Fitment

Will it fit your bike?

Fits 4 models · 4 year-bands

Honda 4 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.