1960
Triumph T120 Bonneville - Specifications & Review

Article Complete Info
| Articleid | 513516 |
|---|---|
| Category | Sport |
| Make | Triumph |
| Model | T120 Bonneville |
| Year | 1960 |
Chassis, Suspension, Brakes & Wheels
| Frametype | Duplex frame |
|---|---|
| Frontbrakes | Expanding brake (drum brake) |
| Frontbrakesdiameter | 203 mm (8.0 inches) |
| Frontsuspension | Telescopic fork. |
| Fronttyre | 3.25-18 |
| Rearbrakes | Expanding brake (drum brake) |
| Rearbrakesdiameter | 178 mm (7.0 inches) |
| Rearsuspension | Twin shocks. Girlings 100 lb/ft spring tension, adjustable pre-set. |
| Reartyre | 3.50-18 |
| Seat | Dual seat |
Engine & Transmission
| Borexstroke | 71.0 x 82.0 mm (2.8 x 3.2 inches) |
|---|---|
| Clutch | Multi-plate, wet |
| Coolingsystem | Air |
| Displacement | 649.00 ccm (39.60 cubic inches) |
| Enginedetails | Twin, four-stroke |
| Fuelsystem | Carburettor. Amal monobloc carburettor |
| Gearbox | 4-speed |
| Ignition | Lucas K2F auto-advance Magneto |
| Power | 46.00 HP (33.6 kW)) @ 6700 RPM |
| Topspeed | 185.0 km/h (115.0 mph) |
| Transmissiontypefinaldrive | Chain |
Other Specifications
| Coloroptions | Pearl Grey/Azure Blue |
|---|---|
| Electrical | AC Alternator |
Physical Measures & Capacities
| Dryweight | 178.0 kg (392.4 pounds) |
|---|---|
| Fuelcapacity | 15.14 litres (4.00 gallons) |
| Groundclearance | 127 mm (5.0 inches) |
| Powerweightratio | 0.2584 HP/kg |
| Seatheight | 770 mm (30.3 inches) If adjustable, lowest setting. |
About Triumph
Country of Origin:
United Kingdom
Founder:
Siegfried Bettmann (original); modern Triumph Motorcycles Ltd.
Best Known For:
Modern classics (Bonneville), Speed/Street Triple, Tiger ADV, and rich heritage
Company History
Triumph rose, fell, and rose again—reinvented as a modern manufacturer blending heritage with sharp engineering. The Bonneville family anchors the brand with air-/liquid-cooled twins that feel timeless yet include ABS, ride modes, and refined fueling. The Speed/Street Triple lines defined playful, usable performance with characterful triples; Tiger ADV models carried that feel into distance. Triumph’s attention to finishing, dealer support, and approachable ergonomics built a wide audience—from new riders to veterans returning for a bike that feels special daily. Historically, Triumph proves that heritage can power innovation when it informs proportions, sound, and feel rather than dictating technology.
