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Motorbike parts and tools

Engine parts & cables

Upper engine

Piston kit Prox Full cast size A

Prox Full cast size A Piston kitRef : 257012DA / 1094559002

Recommended retail price:126,44 €?

113,80 ^€

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Description
Compatible motorbikes
Questions and answers

DescriptionProx Full cast size A Piston kit

Product details :

PROX Cast Piston (manufacturer ref. 01.6226.A) designed for motocross competition. Bi-segment aluminum piston, oversize "A" Ø 53.94 mm, with a flat top and MoS2 treated skirt. Designed to withstand the high demands of modern 125 cm³ cylinders while remaining easy to install during an engine overhaul.

Diameter: Ø 53.94 mm (oversize letter A)
Compression: standard
Material: aluminum alloy
Specificity: flat top – MoS2 treated skirt (anti-friction properties)
Configuration: complete bi-segment piston

This PROX piston comes ready to install with rings, pins, and clips included for replacement on-site or in the workshop. Check the bore and cylinder tolerances before installation and follow the break-in plans recommended by your tuner.

Delivered with: rings, clips, and pin
Recommended spare parts: Rings 260329, Pin 032026, Clips CP1510

Common compatibilities: KTM 125 SX (2025), HUSQVARNA TC 125 (2025), GAS GAS MC 125 (2025). Ideal for motocross riders looking for a robust wear part that adheres to manufacturer specifications.

Technical information :

Reference

257012DA / 1094559002

Piston type

Cast

Coast

Dimensions

53.94 mm

Use

All-terrain

Compatible motorbikes

KTM7 compatible models

125 EXC FACTORY EDITION - 2010/2011 - 2015/2015125 XC-W - 2017/2023125 EXC SIX DAYS - 2001/2017125 EXC - 2001/2017125 SXS - 2000/2008125 SX FACTORY EDITION TYLA RATTRAY - 2005/2005125 SX - 2001/2025

HUSQVARNA4 compatible models

TX 125 - 2017/2020TE 125 SPECIAL EDITION - 2014/2014TE 125 - 2014/2016TC 125 - 2014/2025

BETA4 compatible models

RR 125 2T ENDURO RACING - 2019/2019RR 125 2T ENDURO - 2018/2019RR 125 2T RACING - 2020/2024RR 125 2T - 2020/2024

GAS-GAS3 compatible models

TXT 125 RACING - 2022/2023MC 125 - 2021/2025TXT 125 GP - 2022/2022

HUSABERG1 compatible model

TE 125 - 2012/2014