1961 Triumph T120 C Bonneville Specs

motorcycle specs

These are the known mechanical and performance specifications for your 1961 Triumph T120 C Bonneville.

Basic Specs

Year1961
MakeTriumph
ModelTriumph T120 C Bonneville
Cost

Engine

Displacement649.00 ccm (39.60 cubic inches)
Type
DetailsTwin, four-stroke
Max RPM
Compression8.5:1
Bore/Stroke71.0 x 82.0 mm (2.8 x 3.2 inches)
Valves/Cylinder
FuelingCarburettor. Amal monobloc carburettor
IgnitionLucas K2F auto-advance Magneto
Exhaust
Lubrication
CoolingAir

Drivetrain

Gearbox4-speed
Final DriveChain
ClutchMulti-plate, wet
Driveline

Performance

Horespower46.00 HP (33.6 kW)
Torque
Top Speed185.0 km/h (115.0 mph)

Fuel Economy & Polution

Fuel Consumption
Fuel Capacity15.14 litres (4.00 gallons)
Emissions

Chassis

Frame TypeDuplex frame
Rake
Trail
Front SuspensionTelescopic fork, hydraulic damping.
Front Travel
Rear SuspensionTwin shocks. Girlings 100 lb/ft spring tension, adjustable pre-set.
Rear Travel
SeatDual seat
Seat Height770 mm (30.3 inches) If adjustable, lowest setting.
Alt. Seat Height
Total Height
Total Length
Total Width
Ground Clearance127 mm (5.0 inches)
Wheelbase1,400 mm (55.1 inches)
Dry Weight178.0 kg (392.4 pounds)
Wet Weight

Wheels & Brakes

Front Tire/Tyre3.25-18
Rear Tire/Tyre4.00-18
Front BrakesExpanding brake (drum brake)
Front Brake Diameter203 mm (8.0 inches)
Rear BrakesExpanding brake (drum brake)
Rear Brake Diameter178 mm (7.0 inches)
Wheels

Comments

It appears you're interested in specifications for the Triumph T120 C Bonneville. This Allround model is powered by a Twin, four-stroke engine with 649.00 ccm (39.60 cubic inches) of actual displacement before 8.5:1 compression. Fueling is metered via Carburettor. Amal monobloc carburettor allowing this machine to produce its 46.00 HP (33.6 kW) horsepower and torque. According to our records engine heat of the Triumph T120 C Bonneville is moderated by Air. You'll need to get familiar with the 4-speed transmission and pay attention to final drive Chain maintainence. Our best information shows that the front tire size is 3.25-18 and the rear is 4.00-18 . The entire package is supported by the frame, Duplex frame. We know you like to go fast or cruise all day, but when you need to stop, you'll be dependant on Expanding brake (drum brake) front brakes and Expanding brake (drum brake) rear brakes. The Triumph T120 C Bonneville was launched in 1961, and we're happy to know (or assume) you've got one in your garage. To help you keep your ride in tip-top shape, consider purchasing an owner or service manual.

Export competition model with high-level exhaust pipes.