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

PROX Cast Piston (manufacturer ref. 01.6226.A) designed for cross competition. Bi-segment aluminium piston, oversize "A" Ø 53.94 mm, with a flat head 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: aluminium alloy
• Specificity: flat head – MoS2 treated skirt (anti-friction properties)
• Configuration: bi-segment piston supplied complete

This PROX piston is supplied ready to install with rings, pins, and circlips included for replacement on-site or in the workshop. Check the bore and cylinder tolerances before installation and adhere to the running-in plans recommended by your tuner.

• Supplied with: rings, circlips, and pin
• Recommended spare parts: Rings 260329, Pin 032026, Circlips CP1510

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