Triumph Bonneville T120TT - Specifications & Review

Bonneville T120TT

Article Complete Info

Articleid966263
CategorySport
MakeTriumph
ModelBonneville T120TT
Year1967

Chassis, Suspension, Brakes & Wheels

FrametypeBrazed lug, full-cradle, single downtube
FrontbrakesExpanding brake (drum brake)
Frontbrakesdiameter203 mm (8.0 inches)
FrontsuspensionTelescopic fork, hydraulic damping.
Fronttyre3.50-19
Rake28.0°
RearbrakesExpanding brake (drum brake)
Rearbrakesdiameter178 mm (7.0 inches)
RearsuspensionSwing arm, 2 Girling dampers
Reartyre4.00-18
SeatDual seat
WheelsWire spoked. Dunlop tyres.

Engine & Transmission

Borexstroke71.0 x 82.0 mm (2.8 x 3.2 inches)
ClutchMulti-plate, wet
Compression11.0:1
CoolingsystemAir
Displacement649.00 ccm (39.60 cubic inches)
DrivelineConstant-mesh, right-foot shift
EnginedetailsTwin, four-stroke
FuelsystemCarburettor. Amal Concentric 30mm
Gearbox4-speed
IgnitionAC energy transfer (ET)
Power52.00 HP (38.0 kW)) @ 6500 RPM
Topspeed185.0 km/h (115.0 mph)
TransmissiontypefinaldriveChain

Other Specifications

ColoroptionsDeep red/white, Deep red/gold
Electrical12-volt electrics
StarterKick

Physical Measures & Capacities

Dryweight165.0 kg (363.8 pounds)
Fuelcapacity9.46 litres (2.50 gallons)
Groundclearance127 mm (5.0 inches)
Powerweightratio0.3152 HP/kg
Seatheight775 mm (30.5 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.

Other Years

Bike n Rider logo
Privacy Overview

This website uses cookies so that we can provide you with the best user experience possible. Cookie information is stored in your browser and performs functions such as recognising you when you return to our website and helping our team to understand which sections of the website you find most interesting and useful.