Cruisers
2004Royal Enfield ThunderBird 350
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The 2004 Enfield Thunderbird 350 is a lightweight naked bike ideal for beginners and commuters seeking affordability and simplicity. Powered by an air-cooled single-cylinder engine delivering 18 horsepower, it's known for its reliable, easy-to-maintain design and excellent fuel efficiency. Its modest performance and upright riding position make it perfect for urban riding and casual enthusiasts.
- Capacity
- 346.0 ccm
- Engine
- Single, four-stroke
- Gearbox
- 4-speed
- Dry weight
- 163.0 kg
- Seat height
- 760 mm
- Power
- 18.0 HP (13.2 kW)
What’s new for the 2004 Royal Enfield ThunderBird 350
vs the 2002| Spec | 2002 | 2004 |
|---|---|---|
| Engine capacity | 350.0 ccm (21.36 cubic inches) | 346.0 ccm (21.11 cubic inches) |
| Power | 20.0 HP (14.7 kW) | 18.0 HP (13.2 kW) |
| Torque | — | 27.0 Nm (2.8 kgf-m or 19.9 ft.lbs) |
| Top speed | — | 160.9 km/h (100.0 mph) |
| Dry weight | — | 163.0 kg (359.4 pounds) |
| Wet weight | — | 192.0 kg (423.3 pounds) |
| Seat height | — | 760 mm (29.9 inches) |
| Fuel capacity | — | 14.50 litres (3.83 US gallons) |
| Gearbox | — | 4-speed |
| Front suspension | — | Telescopic, Hydraulic Damping |
| Rear suspension | — | Swing Arm With Adjustable Shock Absorbers |
| Front brakes | — | Expanding brake (drum brake) |
| Rear brakes | — | Expanding brake (drum brake) |
| Wheelbase | — | 1370 mm (53.9 inches) |
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built for laid-back cruising and classic-styled commuting rather than outright performance.
- Built for
- A charming, torquey single-cylinder classic that rewards a relaxed, unhurried riding style.
- Not ideal for
- Not the right choice for riders seeking high speed, sharp handling, or serious off-road capability.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Will it fit you?
Worked out in your browser - nothing is sent to usEngine
- Capacity
- 346.0 ccm
- Power
- 18.0 HP (13.2 kW)
- Torque
- 27.0 Nm (2.8 kgf-m)
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.1104 HP/kg (dry)
- Bore x stroke
- 70.0 x 90.0 mm
- Compression
- 7.3:1
- Cooling system
- Air
- Fuel system
- Carburettor
- Starting
- Kick
- Ignition
- Digital TCI
- Lubrication system
- Dry sump
Transmission
- Gearbox
- 4-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Wet mulitiplate
Performance
- Top speed
- 160.9 km/h (100.0 mph)
Dimensions & weight
- Wheelbase
- 1370 mm
- Overall length
- 2120 mm
- Overall width
- 1080 mm
- Overall height
- 1080 mm
- Seat height
- 760 mm
- Dry weight
- 163.0 kg
- Wet weight
- 192.0 kg
- Fuel capacity
- 14.50 litres
- Ground clearance
- 140 mm
Chassis & suspension
- Frame
- Single downtube, using engine as stressed member
- Front suspension
- Telescopic, Hydraulic Damping
- Rear suspension
- Swing Arm With Adjustable Shock Absorbers
- Front wheel travel
- 130 mm
- Rear wheel travel
- 80 mm
Brakes & wheels
- Front brakes
- Expanding brake (drum brake)
- Front brakes diameter
- 178 mm
- Rear brakes
- Expanding brake (drum brake)
- Rear brakes diameter
- 152 mm
- Front tyre
- 3.25-19
- Rear tyre
- 3.50-19
Other
- Color options
- Riviera red, Purplich blue, Magic black, Silver ash
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
What changed, year to year
Differences highlighted| Specification | 2002 | 2004 | 2007 | 2011 | 2015 | 2019 |
|---|---|---|---|---|---|---|
| Capacity | 350 cc | 346 cc | 346 cc | 346 cc | 346 cc | 346 cc |
| Dry weight | — | 163 kg | 163 kg | 163 kg | 163 kg | 163 kg |
| Seat height | — | 760 mm | 760 mm | 768 mm | 775 mm | 775 mm |
| Fuel capacity | — | 14.5 L | 14.5 L | 14.5 L | 20 L | 20 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the Royal Enfield ThunderBird 350?
The 2004 Royal Enfield ThunderBird 350 has a Capacity of 346.0 ccm (21.11 cubic inches).
What engine power does the Royal Enfield ThunderBird 350 have?
The 2004 Royal Enfield ThunderBird 350 has a Power of 18.0 HP (13.2 kW).
How many gears does the Royal Enfield ThunderBird 350 have?
The 2004 Royal Enfield ThunderBird 350 has a Gearbox of 4-speed.
What is the torque of the Royal Enfield ThunderBird 350?
The 2004 Royal Enfield ThunderBird 350 has a Torque of 27.0 Nm (2.8 kgf-m or 19.9 ft.lbs).
How much does the Royal Enfield ThunderBird 350 weigh?
The 2004 Royal Enfield ThunderBird 350 has a Dry weight of 163.0 kg (359.4 pounds).
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