Prox Full cast size A Piston kitRef : 246003DA / 1094901001

The PROX forged piston is designed for riders seeking a robust and precise replacement part. Machined from aluminium, this piston with a Ø 66.33 mm (letter oversize A) features a domed head and standard manufacturer compression, making it a suitable choice for restoring or maintaining a motocross or roadster engine without altering the original configuration.

• Manufacturer reference: 01.7307.A
• Type: Forged piston
• Diameter: Ø 66.330 mm (66.33 mm)
• Oversize letter: A
• Material: Aluminium
• Compression: Standard
• Specificity: Domed head

Designed for an equivalent replacement to the original equipment, this PROX piston fits into rebuilds and engine revisions to restore reliable bottom-end operation. Its forged construction provides a homogeneous piston structure — however, always ensure to respect the clearance and tolerances recommended during installation (rings, pin, clips, and lubrication).

Particularly suitable for the listed 250 cc models: GAS GAS EC 250 RACING SIX DAYS (2020), FANTIC TR250ES (2015), and GAS GAS EC 250 ENDURO GP (2019), as well as other applications compatible with the A size of 66.33 mm.