Royal Enfield Thunderbird Twinspark features and specifications

Royal Enfield Thunderbird Twinspark has brought a sea of change to the Royal Enfield stable, which until a few years ago was dominated by models which had hardly seen any major change since India’s independence.

The Unit construction engine (UCE) marks a dramatic shift in the traditional Royal Enfield engine architecture. This is world away from the traditional Royal Enfield engine, which has an external clutch and gearbox. In Royal Enfield Thunderbird Twinspark, both these elements are integrated within a common crankcase space. This makes the Thunderbird Twinspark’s engine more compact and reduces transmission loss, friction, maintenance and while at the same time being more reliable than the traditional Royal Enfield Engine.

The new Thunderbird Twinspark also incorporates hydraulic tappets - which are a first in India and combined with the new lean-burn combustion technology and twin spark plugs, give better power, torque and fuel-efficiency. The clutch in Thunderbird Twinspark has also been beefed up with an all new 6-plate one.

This makes the new Thunderbird Twinspark not only the most powerful 350cc production motorcycle in India; it also makes it the easiest Royal Enfield to ride.

Royal Enfield Thunderbird Twinspark Specifications
Engine Type: Single cylinder, 4st, OHV, dual spark ignition engine, aircooled
Bore x Stroke: 70×90mm/346cc
Power: 19.8bhp @ 5250rpm
Torque: 28Nm @ 4000rpm
Compression ratio: 8.5:1
Carburetor: BS29/UCAL
Headlamp: 35/35W 12v halogen
Battery: 12V 14AH
Fuel tank capacity: 15.5 liters (2liter reserve)
Suspension (front): telescopic with hydraulic damping, stroke 130mm
Suspension (rear): swingarm with gas shock absorbers
Brake (front): 280mm disc brake
Brake (rear): 152.4mm drum brake
Tyre (front): 3.25×19”, 6/4PR
Tyre (rear): 3.5×19”, 6/4PR
Wheelbase: 1370mm
Overall length: 2120mm
Overall width: 780mm
Overall height: 1080mm
Minimum ground clearance: 135mm
Seat height: 775mm
Weight: 182kg (kerb)