The Street Triple is available in different engine displacements and configurations, including the Street Triple S, Street Triple R, and Street Triple RS.
Generally, the Triumph Street Triple models have a top speed ranging from approximately 140 mph (225 km/h) to 160 mph (257 km/h), depending on factors such as the model's specifications, engine tuning, and aerodynamics.
For the most accurate and up-to-date information, I recommend referring to Triumph's official website or contacting a Triumph dealer.