MV Agusta 851S Magni Make Model | MV Agusta 861S Magni | Year | 1979 | Engine | Air cooled, four stroke, transverse four cylinders, DOHC. 2 valves per cylinder. | Capacity | 861 | Bore x Stroke | 70 x 56 mm | Compression Ratio | 10.3:1 | Induction | 4x 27mm Dell'Orto carb. | Ignition / Starting | - / electric | Max Power | 71 kW 92.5 hp @ 10000 rpm | Transmission / Drive | 5 Speed / chain | Front Suspension | 38mm Forcelle Italia telescopic forks, preload, rebound damping adjustable. | Rear Suspension | Dual Koni shocks preload adjustable | Front Brakes | 2x 280mm discs | Rear Brakes | Single 280mm disc | Front Tyre | 110/80 -18 | Rear Tyre | 150/70 -18 | Dry Weight | 200 kg | Fuel Capacity | 19 Litres | |