Triumph Street Twin Gold Line - 2021 Specifications and Reviews

The 2021 Triumph Street Twin Gold Line is a classic middleweight motorcycle designed for riders seeking authentic retro styling with modern reliability. Its 900cc parallel-twin engine delivers accessible 65 horsepower and 80 Nm of torque, making it ideal for both new riders and experienced enthusiasts who appreciate vintage aesthetics. Known for its manageable performance, lightweight handling, and timeless British design, the Street Twin Gold Line excels as an everyday commuter and weekend cruiser.

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General information

CategoryClassic
Year2021
ModelTriumph Street Twin Gold Line

Engine and Transmission Specifications

Exhaust systemBrushed stainless steel 2 into 2 exhaust system with twin silencers
Greenhouse gases89.8 CO2 g/km. (CO2 - Carbon dioxide emission)
Fuel consumption3.87 litres/100 km (25.8 km/l or 60.78 mpg)
ClutchWet. multi-plate assist
Transmission typeChain   (final drive)
Gearbox5-speed
Cooling systemLiquid
Fuel controlDouble Overhead Cams/Twin Cam (DOHC)
Fuel systemInjection. Multipoint sequential electronic fuel injection
Valves per Cylinder4
Bore x Stroke84.6 x 80.0 mm (3.3 x 3.1 inches)
Compression11.0:1
Torque80.0 Nm (8.2 kgf-m or 59.0 ft.lbs) @ 3800 RPM
Power65.0 HP (47.4 kW) @ 7500 RPM
Engine details270° crank angle
Engine typeTwin, four-stroke
Capacity:900.0 ccm (54.92 cubic inches)

Brakes, suspension, Frame and wheels

WheelsCast aluminium alloy multi-spoke. Black with gold pinstripe.
Rear brakesSingle disc. ABS. Floating disc. Nissin 2-piston calipers.
Diameter310 mm (12.2 inches)
Front brakesSingle disc. ABS. Floating discs. Brembo 4-piston calipers.
Rear tire150/70-R17
Front tire100/90-18
Rear wheel travel120 mm (4.7 inches)
Rear SuspensionTwin RSUs with preload adjustment
Front wheel travel120 mm (4.7 inches)
Front Suspension41mm cartridge forks
Trail102 mm (4.0 inches)
Rake (fork angle)25.1°
Frame typeTubular steel, with twin cradles
 
 

Physical measures and capacities

Oil capacity3.80 litres (4.02 US quarts)
Fuel capacity12.11 litres (3.20 US gallons)
Wheelbase1450 mm (57.1 inches)
Overall width785 mm (30.9 inches)
Overall height1110 mm (43.7 inches)
Seat height765 mm (30.1 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc215.9 kg (476.0 pounds)
 
 

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
CommentsRide-by-wire throttle with switchable traction control. 2 riding modes, road and rain. Under seat USB charging socket.
InstrumentsAnalogue speedometer with LCD multi-functional display
StarterElectric
Color optionsMatt Sapphire Black/Gold

Performance Profile & Rider Fit

64.1 hp
Peak Power
4.8s
0-60 mph

Best For

Track25%
City82%
Cornering65%
Daily Riding78%
Touring45%
Passenger40%

Rider Profile

Best ForWell suited to newer riders and returning riders thanks to approachable power delivery and light, manageable weight.
PurposeA classic-styled roadster built for everyday commuting, weekend cruising, and stylish city riding rather than outright performance.
Rider FitLow seat height and a slim, lightweight chassis make it easy to handle for riders of most sizes, including shorter riders.
CharacterA charming, retro-styled twin with a punchy low-down torque feel and relaxed, upright riding position.
Not Ideal ForNot the right choice for riders wanting long-distance touring comfort, high-speed performance, or off-road capability.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2021 Triumph Street Twin Gold Line Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 765mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2021 Triumph Street Twin Gold Line, with a moderate knee angle of around 115 degrees and a forward-leaning riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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Rider Reviews

Total comments: 1
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MotorcycleDB Review

The 2021 Triumph Street Twin Gold Line motorcycle is a stunning and powerful machine that delivers on both style and performance. Its eye-catching gold accents and sleek design make it a true head-turner on the road. With its 900cc engine, the Street Twin Gold Line offers impressive power and a smooth, responsive ride. Whether you're a seasoned rider or a beginner, this motorcycle is sure to impress with its handling and overall performance. In addition to its impressive looks and performance, the 2021 Triumph Street Twin Gold Line also comes equipped with advanced technology features, including ride-by-wire throttle, ABS, and traction control. These features enhance the overall riding experience and provide added safety and confidence on the road. Overall, the Street Twin Gold Line is a top-notch motorcycle that offers a perfect balance of style, performance, and advanced technology, making it a standout option in the modern motorcycle market.
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