Prox Complete cast rib A Piston kitRef : 9558DA / 1094493001

Manufacturer's ref: 01.6029.A — PROX cast piston designed for the Cross universe. Replacement part intended for small 65 cm3 engines, suitable for off-road sessions and engine refurbishment.

• Type: Cast aluminium piston
• Diameter: Ø 44.960 mm (oversize letter: A)
• Compression: Standard
• Specificity: Domed head, skirt with Mos2 treatment
• Replacement segments: 260215
• Piston clips: CP1210C

This PROX piston meets the dimensions and finish expected for modern 65 cm3 motocross engines. The domed head is suitable for the combustion chamber architectures found in these displacements, while the Mos2 treated skirt meets specific mechanical strength and sliding requirements for the moving parts of the bottom end. The oversize letter A corresponds to a slightly increased diameter for oversizing.

Main compatibilities: KTM 65 SX (2025), GAS GAS MC 65 (2025) and HUSQVARNA TC 65 (2024). Before installation, check the bore, circumferential clearance and replace segments and clips with the indicated references to ensure a compliant assembly. Ideal part for mechanics and riders who are servicing or rebuilding a Cross engine while adhering to manufacturer specifications.