2020 Triumph Bonneville Street Twin

The 2020 Bonneville Street Twin is an evolution of a model that has been one of Triumph’s best-sellers for many years now. The new specifications for the Street Twin give the 900cc engine 10 more HP, now at 65 HP, and has increased the torque to 60 lbs-ft from 55.

The evolution also sees a new ride-by-wire throttle, selectable rider modes, ABS, switchable traction control, and a new version of the torque assist clutch to reduce lever effort. LED lights front and back are also now standard. As well, a TPMS system is now available as an option, to warn you of any slow or fast punctures to either front or rear tire.

The evolution of the Street Twin’s engine has also increased its durability, as the dealer recommended service interval is up to 10,000 miles from the previously recommended 8,000.

The 2020 Bonneville Street Twin starts at

On this page: we’ve curated specs, features, news, photos/videos, etc. so you can read up on the new Triumph Bonneville Street Twin in one place.

Bonneville Street Twin

Model Overview

General Info

  • Price: $ 9,300
  • Key Features:
    • LED Lighting
    • ABS
    • Fuel-injected

Key Specs

  • Engine type: 900cc, Liquid cooled, 8 valve, SOHC, 270° crank angle parallel-twin
  • Power: 65 HP
  • Wet weight: 436.5lbs (198kg)
  • Seat height: 29.9 in

Bonneville Street Twin

2020 Triumph Bonneville Street Twin Specifications

From Triumph


Engine 900 cc, Liquid cooled, 8 valve, SOHC, 270° crank angle parallel-twin
Power 65 HP
Bore x Stroke 84.6 mm x 80 mm
Compression Ratio 11.0 :1
Fuel System Ride-by-wire, multi-point sequential electronic fuel injection
Starter Electric
Exhaust Brushed 2-into-2 exhaust system with twin brushed silencers


Clutch Wet, multi-plate slip-assist clutch
Transmission 5 Speed
Final Drive O-ring chain


Suspension Front KYB 1.6 in (41mm) forks, non-adjustable with cartridge damping, 120mm travel.
Suspension Rear KYB twin RSUs, with adjustable preload, 4.7 in (120mm) rear wheel travel.
Brakes Front Single 12.2 in (310mm) floating disc, Brembo 4-piston fixed caliper, ABS
Brakes Rear Single 10 in (255mm) disc, Nissin 2-piston floating caliper, ABS
Tires Front Cast aluminum alloy multi-spoke, 2.75 x 18 in
Tires Rear
Cast aluminum alloy multi-spoke, 4.25 x 17 in
Fuel Tank Capacity 3.2 US gal


Spark Plugs
Headlight LED
Tail Light LED


Overall Length
Width Handlebars 30.9 in (785mm)
Height Without Mirror 43.9 in (1114mm)
Wheelbase 55.7 in (1415mm)
Trail 4.03 in (102.4mm)
Seat Height 29.9 in (760mm)
Dry Weight 436.5lbs (198kg)



Bonneville Street Twin

2020 Triumph Bonneville Street Twin Features


Enjoy more power and performance with a new generation Street Twin that’s designed to be even more fun to ride. An upgraded 900cc High Torque Bonneville powered experience is enhanced by new high spec Brembo front brakes, cartridge forks, and cast wheels, plus improved rider ergonomics, better rider control and pillion comfort, and new first in class rider-focused technology including 2 riding modes, all for even more dynamic and intuitive handling and engaging ride.


There’s much more of a sophisticated and contemporary level of styling to this new motorbike. Beautifully designed with premium detailing, the Street Twin has incorporated highly desirable and distinctive original styling cues ranging from the signature Bonneville finned head and header clamps to authentic Triumph maker’s mark and Bonneville engine badging, all complete with a contemporary black finish.


Get excellent stopping power, with better bite and greater rider control with the Street Twin’s new 4-piston Brembo front brake caliper


Higher specification 1.6 inches (41mm) cartridge forks offer 4.7 inches (120mm) travel for a more comfortable and confident ride


New to the Street Twin, and first in class, Road and Rain riding modes adjust the throttle map and traction control settings for more riding control, via a dedicated mode selection button incorporated into the bike’s left hand switchcube

Torque-Assist clutch

It’s easier to enjoy your Street Twin ride for longer with a torque-assist clutch that’s optimized to reduce the rider’s clutch lever effort, especially during stop/start urban rides. The resulting reduction in clutch packaging also facilitates a narrower engine.


For greater rider convenience, Triumph’s electronic Tire Pressure Monitoring System (TPMS) is now available as one of the new Street Twin’s 140+ accessories.


Latest generation ABS and switchable traction control manages the Street Twin’s thrilling torque when it’s required. Compact, responsive, and incorporated with minimal visual impact, these contemporary safety standards can maximize rider safety.


Other advanced rider-focused technology for this new Street Twin includes a power-efficient LED rear light with distinctive pattern, Triumph-badged immobilizer, and USB charger located discreetly under the seat.


Already renowned for its confidence inspiring accessible ride, this Street Twin delivers even better rider ergonomics and comfort, courtesy of a revised riding position and improved seat construction.


Cast aluminium alloy multi-spoke wheels with machined detailing, fitted with Phantom Sports Comp tires for capability and durability.


Even more contemporary finishes and detailing combine to give the Street Twin an added level of premium quality.

2020 Triumph Bonneville Street Twin Photos

2020 Triumph Bonneville Street Twin Videos

Triumph Motorcycle Official Websites

Social Media Links

1 Comment

  1. Shari
    January 26, 2021

    I LOVE this bike! I’m not a short woman, but finding a low enough seat ain’t easy.. The seat height is perfect, and the bike isn’t too heavy. Terrific touring bike but maneuverable.

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