| General |
| Year | 2015 - 16 | 2021 |
| Make Model | Triumph Thunderbird Commander | Triumph Bonneville Speedmaster |
| Dimensions |
| Seat Height | 702 mm / 27.6 in | 705 mm / 27.8 in |
| Wheelbase | 1615 mm / 63.5 in | 1500 mm / 59.1 in |
| Height | 1120 mm / 44.1 in (without mirrors) | 1055 mm /41.5 in |
| Length | 2340 mm / 92.1 in | 2225 mm / 87.6 in |
| Width | 880 mm / 34.6 in (Handlebars) | 910 mm / 35.8 in |
| Weights & Capacities |
| Wet Weight (kg) | 339 | 263 |
| Dry Weight (kg) | 317 | - |
| Dry Weight | 317 kg / 699 lbs | - |
| Fuel Capacity | 22 Litres / 5.8 gal / 4.8 Imp gal | 12 Litres / 3.2 US gal |
| Oil Capacity | 4.2 L / 1.1 US gal / 0.92 Imp gal | - |
| Wet Weight | 339 kg / 747 lbs | 263 kg / 580 lbs |
| Performance |
| Max Power | 70.1 kW / 94 hp @ 5400 rpm | 57.5 kW / 76.9 hp @ 6100 rpm |
| Max Torque | 146 Nm / 14.9 kgf-m / 107.7 ft-lb @ 2750rpm | 106 Nm / 78.2 lb-ft @ 4000 rpm |
| Engine |
| Displacement | 1699 cc / 103.7 cub in | 1198 cc / 73.1 cu in |
| Engine Detail | Four stroke, parallel twin, DOHC, 4 valves per cylinder, 270° firing interval. | Four stoke, parallel twin, 270° crank angle, SOHC, 4 valve per cylinder |
| Bore x Stroke | 107.1 x 94.3 mm | 97.6 x 80 mm |
| Compression Ratio | - | 10.0:1 |
| Cooling System | Liquid cooled | Liquid cooled |
| Emissions | - | EURO5 |
| Exhaust | Chromed twin-skin stainless steel 2 into 1 into 2, tandem large-volume catalysts in centralized catbox, chrome-plated exhaust | Chromed stainless steel 2 into 2 twin-skin exhaust system with chromed stainless silencers |
| Fuel Induction | Multipoint sequential electronic fuel injection with SAI , progressive linkage on throttle | Multipoint sequential electronic fuel injection |
| Ignition | Digital, inductive type via electronic engine management system | Digital |
| Lubrication | Wet sump | Wet sump |
| Starter | Electric | - |
| Drivetrain |
| Clutch | Wet, multi-plate | Wet, multi-plate, torque assist clutch |
| Final Drive | Toothed belt | Chain |
| Transmission / Drive | 6 Speed | 6-Speed |
| Chassis |
| Frame Type | Tubular steel, twin spine, swingarm twin sided, steel | Tubular steel, twin cradle frame |
| Suspension - Front | Showa 47mm forks | 47 mm Showa cartridge forks |
| Suspension - Rear | Showa chromed spring twin shocks with 5 position adjustable preload. | Mono-shock RSU with linkage and preload adjustment |
| Rake | 32° | 25.3° |
| Swingarm | - | Twin sided fabrication |
| Trail | 151 mm / 5.9 in | 91.4 mm / 3.6 in |
| Wheel Travel - Front | 120 mm / 4.7 in | - |
| Wheel Travel - Rear | 95 mm / 3.7 in | - |
| Wheels & Brakes |
| Brakes - Front | 2 x 310 mm floating discs, Nissin 4 piston fixed calipers, ABS | 2 x 310mm disc, Brembo 2-piston sliding axial calipers |
| Brakes - Rear | Single 310 mm fixed disc, Brembo 2 piston floating caliper, ABS | Single 255mm disc, Nissin single piston sliding axial caliper |
| ABS | - | Standard |
| Tyres - Front | 140/75 ZR17 | 130/90-16 |
| Tyres - Rear | 200/50 ZR17 | 150/80-16 |
| Wheels - Front | Cast aluminium alloy 5-spoke 17 x 3.5 in | Wire 32-spoke, 16 x 2.5 in |
| Wheels - Rear | Cast aluminium alloy 5-spoke 17 x 6.0 in | Wire 32-spoke, 16 x 3.5 in |