PROX Cast Piston — manufacturer reference 01.6019.A. Designed for motocross applications, this PROX cast piston is machined from a specific aluminum alloy to limit friction between the piston and the cylinder. Its design meets the requirements of small displacement 50 cm³ engines and is aimed at riders and mechanics looking for a reliable replacement part that conforms to manufacturer specifications.
- Piston Compression: Standard
- Diameter: Ø 39.460 mm (39.46 mm)
- Oversize: STD (Oversize letter: A)
- Material: Aluminum — cast piston
- Category: Piston — Universe: Motocross
This piston meets the oversize A specification indicated and can be installed as a replacement on engines designed for a STD oversize. Ideal for maintenance operations or restoration after engine disassembly, it allows for the return to original specifications without modification of the thermal group.
Main compatibilities (examples): KTM 50 SX (2025 - 50 cm³), HUSQVARNA TC 50 MINI (2024 - 50 cm³), GAS GAS MC 50 (2024 - 50 cm³). Check the engine reference and specification in the workshop manual before installation.
Manufacturer Ref: 01.6019.A
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