Prox Full cast size A Piston kitRef : 245004DA / 1094537001

PROX Cast Piston specially designed for 2-stroke cylinders in the motocross world. Machined from a specific aluminum alloy, this single-segment piston aims to reduce friction against the cylinder wall while maintaining the robustness expected for hard enduro outings or track sessions.

• Type: single-segment cast piston
• Material: aluminum with Mos2 treated skirt for better glide
• Head: flat
• Compression: standard
• Diameter: Ø 53.94 mm (oversize A)

The oversize A (letter A) corresponds to a machining dimension slightly larger than the standard diameter, suitable for cylinders bored to this size. The MOS2 treatment of the skirt limits wear and facilitates break-in, useful for riders looking for a healthy rev-up without mechanical surprises.

Compatible with several modern 125 cm3 motocross bikes, including:

• HUSQVARNA TC 125 (2025)
• KTM 125 XC-W (2023)
• GAS GAS TXT 125 RACING (2023)

Manufacturer reference: 01.6220.A
Brand: PROX