| MODEL | DUCATI 860GTS 1977 |
| Year | 1977 |
| Engine Type | Four-stroke, 90° V-twin (L-twin), SOHC, 2 valves per cylinder, bevel gear driven |
| Displacement / Capacity | 864 cc / 52.7 cu in |
| Bore X Stroke | 86 x 74.4 mm |
| Compression Ratio | 9.0:1 |
| Cooling System | Air cooled |
| Max Power | 41.9 kW / 57 hp @ 7700 rpm |
| Max Torque | — |
| Ignition | Electronic |
| Induction | 2 x 32 mm Dell'Orto PHF 32 A (C) carburettors |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 5 speed |
| Clutch | Wet, multiplate |
| Final Drive | Chain, 2.533:1 (15/38) |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | Marzocchi fork |
| Rear Suspension | Marzocchi dual shocks, 3-way adjustable |
| Front Brakes | 2 x 280 mm discs, 1 piston calipers |
| Rear Brakes | 200 mm drum |
| DIMENSION SPECS | |
| Overall Length | 2200 mm / 86.6 in |
| Overall Width | 900 mm / 35.5 in |
| Overall Height | 1170 mm / 46.1 in |
| Seat Height | 825 mm / 32.5 in |
| Wheelbase | 1550 mm / 61.0 in |
| Ground Clearance | — |
| Dry Weight | 185 kg / 408 lbs |
| Wet Weight | 206 kg / 454 lbs |
| WHEEL SPECS | |
| Front Tyre | 3.50 H18 |
| Rear Tyre | 4.00 H18 |
| FUEL SYSTEM | |
| Fuel Capacity | 18 Litres / 4.8 US gal / 4.0 Imp gal |
| Fuel Consumption | — |
| Top Speed | 195 km/h / 121 mph |
The 1977 860GTS carried on the restyled GT line with the 864 cc bevel-drive V-twin, five-speed gearbox and chain drive. It was the final year under the 860 name before the bike became the 900GTS. Handling was stable but weighty, and the bike remains a relatively rare Ducati of the era.
