| MODEL | ROYAL ENFIELD THUNDERBIRD 350 (LEAN-BURN) 2007 - 2008 |
| Year | 2007 - 2008 |
| Engine Type | 4-stroke, air-cooled single, OHV, 2 valves |
| Displacement / Capacity | 346 cc / 21.1 cu in |
| Bore X Stroke | 70 x 90 mm |
| Compression Ratio | 8.5:1 |
| Cooling System | Air-cooled |
| Max Power | 18 bhp @ 5500 rpm |
| Max Torque | 26.97 Nm / 19.9 lb-ft @ 5000 rpm |
| Ignition | Electronic CDI |
| Induction | Mikuni CV carburettor |
| Start System | Kickstart (electric start optional) |
| TRANSMISSION SPECS | |
| Lubrication | Forced, gear pump |
| Gear Box | 5-speed constant mesh, left foot shift |
| Clutch | Wet multiplate |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Tubular welded |
| Front Suspension | Telescopic, hydraulically damped |
| Rear Suspension | Swingarm with hydraulic shock absorbers |
| Front Brakes | 7 in twin leading shoe drum (hydraulic disc optional) |
| Rear Brakes | 6 in twin leading shoe drum |
| DIMENSION SPECS | |
| Overall Length | 2120 mm / 83.5 in |
| Overall Width | 750 mm / 29.5 in |
| Overall Height | — |
| Seat Height | 740 mm / 29.1 in |
| Wheelbase | 1370 mm / 53.9 in |
| Ground Clearance | 140 mm / 5.5 in |
| Dry Weight | — |
| Wet Weight | 175 kg / 386 lb (kerb) |
| WHEEL SPECS | |
| Front Tyre | 3.25 x 18 (page also lists 19 in rim) |
| Rear Tyre | 3.5 x 19 |
| FUEL SYSTEM | |
| Fuel Capacity | 14.45 L / 3.8 US gal |
| Fuel Consumption | 34 km/l overall (tested) |
| Top Speed | 107.6 km/h / 66.9 mph (tested) |
A relaxed cruiser built around the lean-burn aluminium 350 with a stepped seat and pillion backrest. In a road test it managed about 108 km/h and roughly 34 km/l.
