1974 Norton MK2A 850 Commando Roadster Specs

motorcycle specs

These are the known mechanical and performance specifications for your 1974 Norton MK2A 850 Commando Roadster.

Basic Specs

Year1974
MakeNorton
ModelNorton MK2A 850 Commando Roadster
TypeSport
CostUS$ 1900. Prices depend on country, taxes, accessories, etc.

Engine

Displacement828.00 ccm (50.52 cubic inches)
TypeSame engine as the Interstate
DetailsTwin, four-stroke
Max RPM7500
Compression8.5:1
Bore/Stroke77.0 x 89.0 mm (3.0 x 3.5 inches)
Valves/Cylinder2
FuelingCarburettor. Twin Amals
Ignitionpoints
ExhaustDouble chrome pipes
LubricationDry sump
CoolingAir

Drivetrain

Gearbox4-speed
Final DriveChain
ClutchWet multiplate
Driveline

Performance

Horespower60.00 HP (43.8 kW)
Torque
Top Speed189.9 km/h (118.0 mph)

Fuel Economy & Polution

Fuel Consumption5.11 litres/100 km (19.6 km/l or 46.03 mpg)
Fuel Capacity11.36 litres (3.00 gallons)
Emissions118.6 CO2 g/km. (CO2 - Carbon dioxide emission)

Chassis

Frame TypeDouble cradle, large back bone steel, with Isolastic vibration system
Rake
Trail
Front SuspensionTelescopic
Front Travel152 mm (6.0 inches)
Rear SuspensionTwin shocks
Rear Travel76 mm (3.0 inches)
Seat
Seat Height787 mm (31.0 inches) If adjustable, lowest setting.
Alt. Seat Height
Total Height
Total Length2,235 mm (88.0 inches)
Total Width
Ground Clearance152 mm (6.0 inches)
Wheelbase1,440 mm (56.7 inches)
Dry Weight188.2 kg (415.0 pounds)
Wet Weight199.6 kg (440.0 pounds)

Wheels & Brakes

Front Tire/Tyre
Rear Tire/Tyre
Front BrakesSingle disc
Front Brake Diameter
Rear BrakesExpanding brake (drum brake)
Rear Brake Diameter
WheelsSpoke

Comments

It appears you're interested in specifications for the Norton MK2A 850 Commando Roadster. This Sport model is powered by a Same engine as the Interstate Twin, four-stroke engine with 828.00 ccm (50.52 cubic inches) of actual displacement before 8.5:1 compression. Fueling is metered via Carburettor. Twin Amals allowing this machine to produce its 60.00 HP (43.8 kW) horsepower and torque. According to our records engine heat of the Norton MK2A 850 Commando Roadster 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 and the rear is . The entire package is supported by the frame, Double cradle, large back bone steel, with Isolastic vibration system. We know you like to go fast or cruise all day, but when you need to stop, you'll be dependant on Single disc front brakes and Expanding brake (drum brake) rear brakes. The Norton MK2A 850 Commando Roadster was launched in 1974, 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.

English bike. Last of the kick start Commandos. Shifts on the right side. 1 up 3 down