| MODEL | YAMAHA BT1100 BULLDOG 2005 |
| Year | 2005 |
| Engine Type | Four stroke, 75° V-twin, SOHC |
| Displacement / Capacity | 1063 cc / 64.8 cu in |
| Bore X Stroke | 95 x 75 mm |
| Compression Ratio | 8.3:1 |
| Cooling System | Air cooled |
| Max Power | 47.4 kW / 65 hp @ 5500 rpm |
| Max Torque | 88.2 Nm / 9 kgf-m @ 4500 rpm |
| Ignition | TCI (Transistor Controlled Ignition) |
| Induction | 2 x 37 mm carburettors |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 5 Speed |
| Clutch | Wet, multiple discs, cable operated |
| Final Drive | Shaft |
| CHASSIS SPECS | |
| Frame | Aluminium, single cradle |
| Front Suspension | 43 mm forks, preload adjustable; 130 mm / 5.1 in travel |
| Rear Suspension | Rising rate monoshock, preload adjustable; 113 mm / 4.4 in wheel travel |
| Front Brakes | 2 x 298 mm discs, 4 piston calipers |
| Rear Brakes | Single 282 mm disc, 1 piston caliper |
| DIMENSION SPECS | |
| Overall Length | 2200 mm / 86.6 in |
| Overall Width | 800 mm / 31.4 in |
| Overall Height | 1140 mm / 44.8 in |
| Seat Height | — |
| Wheelbase | 1530 mm / 60.2 in |
| Ground Clearance | — |
| Dry Weight | 229.5 kg / 505.9 lbs |
| Wet Weight | 251 kg / 553.3 lbs |
| WHEEL SPECS | |
| Front Tyre | 120/70-17 |
| Rear Tyre | 170/60-17 |
| FUEL SYSTEM | |
| Fuel Capacity | 20 Litres / 5.2 US gal |
| Fuel Consumption | — |
| Top Speed | 110 mph / 177 km/h |
The BT1100 Bulldog was Yamaha's European-market naked roadster, built in Italy around the air-cooled 1063 cc V-twin from the Drag Star cruiser. It paired that old-fashioned engine with an aluminium frame, shaft drive and an upright riding position, aiming at city and back-road use rather than outright performance. Reviewers found it relaxed rather than sporty, with strong brakes and a rigid chassis.
