The Triumph Bonneville T120 Diamond Edition motorcycle specifications include a 1,200 cc (73.22 cu in) engine, a 6-speed gearbox, and a listed weight of 224 kg (493.8 lb).
Key specifications
How the Triumph Bonneville T120 Diamond Edition compares
This compares the motorcycle with all Triumph models in this specifications database. The blue marker is this model and the grey line is the Triumph database average.
About 26% higher than the Triumph database average. Around the 85th percentile across Triumph models.
Very close to the Triumph database average. Around the 50th percentile across Triumph models.
About 19% smaller than the Triumph database average. Around the 18th percentile across Triumph models.
Triumph database percentile rankings
Percentiles show where this motorcycle sits across the Triumph specifications database. They are descriptive database rankings, not performance ratings.
1,200 cc — larger displacement than about 85% of Triumph models.
790 mm — taller than about 50% of Triumph models.
14.5 L — larger than about 18% of Triumph fuel tanks in this database.
Dimensions compared with Triumph average
Each measurement is compared with the average value across Triumph models where that dimension is available.
2,230
2,218
Close to average.
785
821
4% below average.
1,100
1,199
8% below average.
1,450
1,491
Close to average.
790
789
Close to average.
Mechanical overview
Additional useful specifications
| Front tire size | 100/90-18 |
|---|---|
| Rear tire size | 150/70-R17 |
| Front tire width | 100 mm |
| Front tire aspect ratio | 90% |
| Front rim diameter | 18 in |
| Engine oil capacity | 4.50 L (4.76 US qt) |
| Estimated theoretical fuel range | 322 km |
| Bore/stroke ratio | 1.22:1 (Oversquare) |
Model information
| Year released | 2019 |
|---|---|
| Category | Classic |
Engine specifications
| Engine type | Twin, four-stroke |
|---|---|
| Displacement | 1,200 cc (73.22 cu in) |
| Torque | 105.0 Nm (10.7 kgf-m or 77.4 ft.lbs) @ 3,100 rpm |
| Bore × stroke | 97.6 x 80 mm (3.8 x 3.1 inches) |
| Compression ratio | 10.0:1 |
| Valves per cylinder | 4 |
| Cooling system | Air |
| Fuel system | Injection. Multipoint sequential electronic fuel injection with SAI |
| Fuel control | Single Overhead Cams (SOHC) |
| Ignition | Digital-inductive type via engine management system |
| Starter | Electric |
| Oil capacity | 4.50 L (4.76 US qt) |
Transmission and drivetrain
| Gearbox | 6-speed |
|---|---|
| Final drive | Chain (final drive) |
| Clutch | Wet, multi-plate assist clutch |
Chassis and suspension
| Frame | Tubular steel cradle. Twin-sided, tubular steel swing arm. |
|---|---|
| Front suspension | Kyb 41mm cartidge forks, |
| Rear suspension | Kyb twin shocks with adjustable preload, |
| Front wheel travel | 120 mm (4.7 inches) |
| Rear wheel travel | 120 mm (4.7 inches) |
| Rake | 25.5° |
| Trail | 105 mm (4.1 inches) |
Brakes, wheels and tires
| Front brakes | Single disc. ABS. Nissin 2-piston floating caliper |
|---|---|
| Rear brakes | Single disc. ABS. Nissin 2-piston floating caliper |
| Front tire | 100/90-18 |
| Rear tire | 150/70-R17 |
| Wheels | Wire spoked. |
Dimensions and weight
| Dry weight | 224 kg (493.8 lb) |
|---|---|
| Seat height | 790 mm (31.1 inches) |
| Overall length | 2,230 mm (87.8 inches) |
| Overall width | 785 mm (30.9 inches) |
| Overall height | 1,100 mm (43.3 inches) |
| Wheelbase | 1,450 mm (57.1 inches) |
Fuel and emissions
| Fuel capacity | 14.50 L (3.83 US gal) |
|---|---|
| Fuel consumption | 4.50 L/100 km (22.2 km/l or 52.27 mpg) |
| Greenhouse gases | 104.4 CO 2 g/km. (CO2 – Carbon dioxide emission) |
Performance
| Power/weight ratio | 0.3571 hp/kg |
|---|
Electrical and instruments
| Instruments | LCD multi-functional instrument pack |
|---|
Other specifications
| Color options | White/Silver |
|---|---|
| Exhaust system | Chromed 2 into 2 exhaust system with twin chrome silencers |
| Factory warranty | 24 months unlimited milage |
| Price as new | US$ 12350. MSRP depends on country, taxes, accessories, etc. |
Disclaimer: Specifications may vary by market, trim, production date and optional equipment, and scraped or historical data can contain errors. Comparison and percentile values are calculated from Triumph models in this specifications database. Always double-check important specifications against the motorcycle owner’s/service manual and official Triumph information before relying on them. Visit the official Triumph website.