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Thunderbird Twinspark

Launched in year 2008, Thunderbird Twinspark is one of the most stylish bike intended for those who want and wish to be on top of the world. It is the first model that leads Royal Enfield revolutionary Unit Construction Engine.

Thunderbird

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The Royal Enfield Thunderbird Twinspark is the perfect example of unfolding mix of old and new. Its 346 cc engine, 4 stroke single cylinder air-cooled engine delivers maximum power of 19.8 bhp @ 5250 rpm capacity ensuring its smooth performance and constant vacuum (CV) carburetor assure its simple start. Delighting customers, this bike is absolute comfort statement for the passenger as well as rider. This bike is like a must-have for every rider and it is hard to beat in terms of pure riding pleasure and visual delight.

Special Features:

Incorporated with all latest and advanced features, this bike includes:

Ergonomically designed high density foam seats
Rear gas filled shock absorber
Heat shield on silencer
Bigger CV carburetor BS-29
Electric starter
Electronic flasher
Multi focal reflector
280mm disc-front brake and 150mm drum-rear brake
Engine – Single cylinder, 4 Stroke, OHV, Dual spark ignition engine, aircooled
Power and Torque - 19.8 bhp @ 5250 rpm/28 Nm @ 4000 rpm
Fuel tank capacity – 15.5±1Liters

TECHNICAL SPECIFICATIONS OF THUNDERBIRD TWINSPARK

Engine
Engine	Single Cylinder, 4 Stroke, Ohv, Dual Spark Ignition Engine, Aircooled
Bore x Stroke mm/Displacement	70x90/346CC
Compression Ratio	8.5 : 1
Air Cleaner	Paper Element
Power & Torque	19.8 bhp @ 5250 rpm/28 Nm @ 4000 rpm
Engine Oil Grade / Qty	15W 50 API SL Grade / 2.75 Ltrs
Fd Sprocket	15 Teeth
Rear Wheel Sprocket	38 Teeth
Secondary Drive Ratio	2.533 : 1
Carburetor / Make	BS29 / UCAL
Electrical
Battery	12V, 14AH
Headlamp	12V, 35W/35W Halogaen, Mfr
Tail Lamp	12V 21/5W Mfr Lamp
Indicator	12V 10W Mfr Lamp
Ignition Coil	12mJ-2NOS
Spark Plug	W5DC-1 N0. UR5DC - 1 No.
E-start Starter Motor	0.7KW (Powder Coated)
Instruments	Tci Cluster (Fuel Gauge, Speedo, Rpm, Warning Indicator)
Magneto	18 Pole
VEHICLE
Fuel Tank Capacity	15.5±1Ltrs
Reserve Fuel Capacity	2 Ltrs
Suspensions
Front	Tele Scopic With Hydraulic Damping. Stroke 130mm.
Rear	Swingarm With Gas Shock Absorbers
Brakes
Front	Hydraulic Disc Brake (Disc dia 280mm)
Rear	Mechanical, Drum Brake, Single Lead (Dia 152.4 mm or 6" drum brake)
Tyres
Front	3.25x19", 6/4PR
Rear	3.5X19", 6/4PR
Wheel Base	1370mm
Overall Length	2120mm
Overall Width	780mm
Overall Height	1080mm
Min Ground Clearance	135mm
Seat Height/Saddle Height	770mm
Weight (Kerb)	182 Kg
Source: http://www.royalenfield.com/