Model:SMX 660 F Competition Engine: TM RACING Bore and Stroke: 104X77,4 Displacement: 657,5 Compression ratio: N.D. Horse power: N.D. Timing system: DOCH 4 valves Lubrification: Dry sump with double rotor pump Carburettor: Keihin FCR 41mm Fuel: Unleaded fuel Ignition: Kokusan CDI Electronic with variable advance Clutch: Multiuple-disk in oil-bath with hydaulic control Gear: 5 gears Cooler System: Coolant liquid with pump Starting: kick start (optional Electric start) Frame: Perimetral aluminium section Front fork: Marzocchi USD 50 mm ( optional Ohlins 48 mm ) Rear shock: Sachs Boge (optional Ohlins ) Front tyre: racing Front tyre: racing Front brake: Disk 320 mm. with Brembo radial pump and caliper Rear brake: Disk 240 mm. with Nissin pump and caliper Tank: Plastic 8,2 litres