These are the known mechanical and performance specifications for your 2011 Enfield Thunderbird TwinSpark.
Basic Specs
Engine
Displacement346.00 ccm (21.11 cubic inches)
TypeRoya Enfield Unit Construction Engine.
DetailsSingle cylinder, four-stroke
Max RPM
Compression7.3:1
Bore/Stroke70.0 x 90.0 mm (2.8 x 3.5 inches)
Valves/Cylinder
FuelingCarburettor. BS29/UCAL
IgnitionDual spark
Exhaust
LubricationDry sump
CoolingAir
Performance
Horespower19.80 HP (14.5 kW)
Torque28.00 Nm (2.9 kgf-m or 20.7 ft.lbs)
Top Speed120.0 km/h (74.6 mph)
Fuel Economy & Polution
Fuel Consumption
Fuel Capacity14.50 litres (3.83 gallons)
Emissions
Chassis
Frame TypeSteel
Rake
Trail
Front SuspensionTele Scopic With Hydraulic Damping.
Front Travel130 mm (5.1 inches)
Rear SuspensionSwing arm With Gas Shock Absorbers.
Rear Travel80 mm (3.1 inches)
Seat
Seat Height
Alt. Seat Height
Total Height1,080 mm (42.5 inches)
Total Length2,120 mm (83.5 inches)
Total Width780 mm (30.7 inches)
Ground Clearance135 mm (5.3 inches)
Wheelbase1,370 mm (53.9 inches)
Dry Weight163.0 kg (359.4 pounds)
Wet Weight
Wheels & Brakes
Front Tire/Tyre3.25-19
Rear Tire/Tyre3.50-19
Front BrakesSingle disc
Front Brake Diameter280 mm (11.0 inches)
Rear BrakesExpanding brake (drum brake)
Rear Brake Diameter152 mm (6.0 inches)
Wheels
Comments
Royal Enfield bikes are made in India.