Street Triple

2011 Triumph Street Triple Technical Analysis & Specification Breakdown

At the heart of the 2011 Triumph Street Triple naked motorcycle, Triumph utilizes a 675 cc (41.2 cu in) liquid-cooled in-line three, four-stroke layout. In factory specification, peak output is rated at 105 HP (76.6 kW) at 11,700 rpm while maximum torque reaches 67.8 Nm (50 lb-ft) at 9,200 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 155.6 HP per liter and a 2,500 rpm working window between peak torque (9,200 rpm) and peak power (11,700 rpm), the engine character is placing it firmly in high-revving supersport territory where top-end breathing dominates.

On the scales, the Street Triple measures 188.7 kg (416 lbs) wet (curb), translating to a power-to-weight ratio of 0.56 HP/kg (1.8 kg per horsepower). Rider ergonomics and chassis geometry center around a 800 mm (31.5 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,410 mm (55.5 in) wheelbase engineered for quick, flickable steering geometry. The 17.41-liter (4.6 US gal) fuel tank supports practical everyday commuting and weekend road stints.

Within MotoLibrary's Triumph archive, this model family spans 6 indexed model years from 2009 to 2016, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.