PROX forged piston designed for engine preparations and repairs of 650cc Honda twin-cylinder motorcycles. Machined from a specific aluminum alloy, this piston minimizes friction against the sleeve to maintain reliability and load capacity. Its forged design provides a homogeneous structure suitable for the thermomechanical stresses encountered on roads and trails.

• Manufacturer reference: 01.1660.050
• Diameter: Ø 100.50 mm (oversize +0.50 mm, letter 050)
• Compression: Standard
• Material: Aluminum, forged
• Number of segments: delivered in segment kit
• Category: Piston — Roadster universal

This PROX piston is aimed at riders looking for a robust part to rebuild an engine after boring to +0.50 mm. It is particularly suitable for the models listed, frequently equipped with 650 cc displacements:

• HONDA FMX 650 FUNMOTO (RD12) — 2006
• HONDA NX 650 DOMINATOR (RD08) — 1999
• HONDA SLR 650 (RD09) — 1998

Installation and wear check recommended by a professional: checking piston/sleeve clearance, checking cylinder head flatness, and replacing the segments provided during the overhaul. Ideal part to restore clean and durable operation of the piston-ring assembly.