The Triumph Street Twin motorcycle specifications include a 900 cc (54.92 cu in) engine, power of 55 hp (40.1 kW) @ 5,900 rpm, a 5-speed gearbox, and a listed weight of 198.2 kg (437 lb).
Key specifications
2016, 2017, 2018, 2019, 2021, 2022Model years
900 ccDisplacement
55 hpPower
80.0 Nm @ 3,230 rpmTorque
198.2 kgDry weight
749 mmSeat height
12.1 LFuel tank
1,415 mmWheelbase
Model years covered
201620172018201920212022
Year-specific specification changes
The 2016 model is treated as the standard specification. Only later model years with a different supplied value are shown below.
Compression ratio
2019202211.0:1
Dry weight
20172019198 kg (436.5 lb)
Frame
20212022Tubular steel, with twin cradles
Front brakes
20182019Single disc. ABS. Floating discs. Nissin two-piston calipers.
20212022Single disc. ABS. Floating discs. Brembo 4-piston calipers.
Front suspension
20172018KYB 41mm forks.
2019KYB twin RSUs, with adjustable preload
2021202241mm cartridge forks
Power
202165 hp (47.4 kW) @ 7,500 rpm
Rear brakes
20182019Single disc. ABS. Floating disc. Nissin two-piston calipers.
20212022Single disc. ABS. Floating disc. Nissin 2-piston calipers.
Rear suspension
20172019KYB twin shocks with adjustable preload.
20212022Twin RSUs with preload adjustment
Torque
2019202280.0 Nm (8.2 kgf-m or 59.0 ft.lbs) @ 3,800 rpm
Wheelbase
202120221,450 mm (57.1 inches)
Clutch
20172022Wet. multi-plate assist
Fuel control
20172022Double Overhead Cams/Twin Cam (DOHC)
Instruments
20212022Analogue speedometer with LCD multi-functional display
Overall height
202120221,110 mm (43.7 inches)
Overall width
2022780 mm (30.7 inches)
Power/weight ratio
201720180.2778 hp/kg
20190.3283 hp/kg
Seat height
20172018750 mm (29.5 inches)
2019759 mm (29.9 inches)
20212022765 mm (30.1 inches)
Trail
20182022102 mm (4.0 inches)
Mechanical overview
Engine layout snapshot
Twin, four-stroke • 900 cc • Liquid cooled • 55 hp
Chassis snapshot
Wheelbase 1,415 mmSeat 749 mm
5-speed • Chain (final drive) • 100/90-18 front / 150/70-R17 rear
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 | 3.80 L (4.02 US qt) |
| Estimated theoretical fuel range | 313 km |
| Power-to-weight ratio | 0.277 hp/kg |
| Power-to-weight | 277.5 hp/tonne |
| Specific power | 61.1 hp/L |
| Bore/stroke ratio | 1.06:1 (Oversquare) |
Model information
| Category | Naked bike |
|---|
Engine specifications
| Engine type | Twin, four-stroke |
|---|---|
| Displacement | 900 cc (54.92 cu in) |
| Power | 55 hp (40.1 kW) @ 5,900 rpm |
| Torque | 80.0 Nm (8.2 kgf-m or 59.0 ft.lbs) @ 3,230 rpm |
| Bore × stroke | 84.6 x 80 mm (3.3 x 3.1 inches) |
| Compression ratio | 10.6:1 |
| Cooling system | Liquid |
| Fuel system | Injection. Multipoint sequential electronic fuel injection |
| Fuel control | Single Overhead Cams (SOHC) |
| Starter | Electric |
| Oil capacity | 3.80 L (4.02 US qt) |
Transmission and drivetrain
| Gearbox | 5-speed |
|---|---|
| Final drive | Chain (final drive) |
| Clutch | Wet. multi-plate assist clutch |
Chassis and suspension
| Frame | Tubular steel cradle |
|---|---|
| Front suspension | Kayaba 41mm forks. 120mm travel |
| Rear suspension | Kayaba twin shocks with adjustable preload. 120mm rear wheel travel |
| Rake | 25.1° |
| Trail | 100 mm (3.9 inches) |
Brakes, wheels and tires
| Front brakes | Single disc. ABS. Floating discs. Two-piston calipers. |
|---|---|
| Rear brakes | Single disc. ABS. Floating disc. Two-piston calipers. |
| Front tire | 100/90-18 |
| Rear tire | 150/70-R17 |
| Wheels | Cast aluminium alloy multi-spoke |
Dimensions and weight
| Dry weight | 198.2 kg (437 lb) |
|---|---|
| Seat height | 749 mm (29.5 inches) |
| Overall width | 785 mm (30.9 inches) |
| Overall height | 1,115 mm (43.9 inches) |
| Wheelbase | 1,415 mm (55.7 inches) |
Fuel and emissions
| Fuel capacity | 12.11 L (3.20 US gal) |
|---|---|
| Fuel consumption | 3.87 L/100 km (25.8 km/l or 60.78 mpg) |
| Greenhouse gases | 89.8 CO 2 g/km. (CO2 – Carbon dioxide emission) |
Performance
| Power/weight ratio | 0.2775 hp/kg |
|---|
Electrical and instruments
| Instruments | LCD multi-functional instrument. |
|---|
Other specifications
| Color options | Black, Red, Silver, Matt Black |
|---|---|
| Exhaust system | Brushed stainless steel 2 into 2 exhaust system with twin silencers |
| Price as new | US$ 8700. 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.