Triumph 6T Thunderbird (1950-53) vs Triumph Speed Twin (2019) vs Suzuki GSX-R 400 (1986)
Comparison technical specifications
Add bike |
Remove bike |
Remove bike |
Remove bike |
| Make: | Triumph | Triumph | Suzuki |
| Model: | 6T Thunderbird | Speed Twin | GSX-R 400 |
| Years: | 1950-53 | 2019 | 1986 |
| Engine: | Four stroke, vertical twin, OHV | Four stoke, parallel twin, 270o crank, SOHC, 4 valve per cylinder | Four stroke, transverse four cylinder, DOHC 4 valves per cylinder. TSCC |
| Capacity: | 649 cc / 40.0 cu in | 1198 cc / 73.1 cu in | 398 cc / 24.3 cu-in |
| Bore x Stroke: | 71 x 82 mm | 97.6 x 80 mm | 53 x 45.2 mm |
| Cooling System: | Air cooled | Liquid cooled | Liquid cooled |
| Compression Ratio: | 8.5:1 (Export), 7.0:1 (UK) | 11.0:1 | 11.5:1 |
| Induction: | 1 x Amal Monobloc, 25 mm (1953: SU type MC2) | Multipoint sequential electronic fuel injection | 2 x AS27VW carburetors |
| Ignition: | Lucas magneto | Digital | CDI |
| Starting: | Kick | Electric | Electric |
| Max Power: | 25 kW / 34 hp @ 6500 rpm | 71.5 kW / 96 hp @ 6750 rpm | 44 kW / 59 hp @ 11000 rpm |
| Clutch: | Wet, multiplate | Wet, multi-plate assist clutch | Wet multi-plate |
| Transmission: | 4-Speed constant mesh | 6-Speed | 6 Speed, constant mesh |
| Final Drive: | Chain, 101 links | Chain, X-ring | Chain |
| Frame: | Brazed lug | Tubular steel with aluminum cradle | Aluminum angular pipe double cradle |
| Front Suspension: | Telescopic fork, hydraulic damping | 41mm cartridge forks | Telescopic forks |
| Rear Suspension: | Rigid, spring loaded saddle | Twin-sided, aluminum swingarm, twin shocks with adjustable preload | Full floater swing arm, non-adjustable |
| Front Brakes: | SLS drum, 7 in | 2 x 305 mm discs, Brembo 4-piston fixed calipers, ABS | 2 x Discs, 4 piston calipers |
| Rear Brakes: | SLS drum, 7 in | Single 220 mm disc, Nissin 2-piston floating caliper, ABS | Single disc, 2 piston caliper |
| Wheelbase: | 1403 mm / 55.25 in | 1430 mm / 56.3 in | 1425 mm / 56.1 in |
| Seat Height: | 775 mm / 31 in | 807 mm / 31.8 in | 780 mm / 30.7 in |
| Dry Weight: | 168 kg / 370 lbs | 196 kg / 432 lbs | 152 kg / 334 lbs |
| Fuel Capacity: | 13.6 L / 3.6 US gal / 3.0 Imp gal (US), 18 L / 4.8 US gal / 4.0 Imp gal (UK and export) | 14.5 Litres / 3.8 US gal | 15 Litres / 3.96 US gal / 3.3 Imp gal |