The Triumph Street Twin was launched in 2016 as part of the new liquid-cooled Bonneville range. It uses a 900cc parallel twin with a 270-degree crank, offering strong torque and easy handling.
It is light and easy to ride, making it popular with new riders. In 2019 it gained more power. It was renamed the Speed Twin 900 in 2023. Rivals include the Kawasaki W800 and Royal Enfield Interceptor 650.