Prox Forged Piston kitRef : PRO00240A / 1094885001

PROX Forged Piston (Manufacturer reference 01.6604.A)

Designed for the single-cylinder engines of trail and sport roadsters, this PROX forged piston provides the machining precision necessary for a reliable replacement during an engine overhaul. Made from aluminum, it meets the manufacturer's specifications with an oversize "A" (Ø 100.94 mm) and standard compression — suitable for bores oversize by 0.94 mm.

• Manufacturer reference: 01.6604.A
• Diameter: Ø 100.94 mm (oversize A)
• Compression: Standard
• Material: Forged aluminum
• Segments: supplied in kit — replacement segments: 260123
• Category: Piston — brand PROX

This piston is intended for the Cross and Roadster universes and is compatible with the listed KTM models: 640 LC4 ADVENTURE (2007), 625 SXC (2007), and 640 SUPERMOTO LC4 PRESTIGE (2006). For any intervention on an oversize bore, check the dimensions of your cylinder and the exact compatibility before installation.

As a machined replacement part designed to meet tolerances, it integrates into top-end work (segment kit included) to restore the combustion chamber and bore. Keep the product references for your orders and revisions.