PROX PISTON KIT ALUMINUM 101.95MM B

§ 01 / Part

09101202 PISTON KIT ALUMINUM 101.95MM B

Fits 20 bikes
£193.02 Save 15%
£164.07

incl. VAT

In stock — ships in 3 working days

Usually dispatched within 3 working days.

Part #: 09101202

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PROX

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§ 02 / About this part

What it is

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

Select this B-size kit for your next top-end service to account for normal cylinder wear. The marginal increase in diameter ensures a stable fit within the bore, reducing noise and improving ring sealing. It replaces OEM part 1S3-11631-00. Maintaining the top-end at scheduled intervals is the best way to avoid expensive engine failures. This kit comes with the rings, wrist pin, and circlips. Measure your bore diameter to confirm this is the correct tolerance for your bike. Deglaze the cylinder before installation to allow the new rings to seat properly against the wall.

§ 03 / Specs

The numbers

Brand
PROX
Part number
09101202
Category
Top End
Weight
0.55 kg
OEM cross-refs
1S3-11631-00
VAT
20%

// Fitment

Will it fit your bike?

Fits 20 models · 26 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.
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Free UK shipping over £100 14-day no-quibble returns OEM-grade parts only UK-based support · 9 to 5 Race-shop prices, paddock service Click & collect from Leeds
Free UK shipping over £100 14-day no-quibble returns OEM-grade parts only UK-based support · 9 to 5 Race-shop prices, paddock service Click & collect from Leeds