TRIUMPHSpeed Four 2003 - 2004

　　In 2003, the British motorcycle manufacturer launched the Triumph Speed Four, a standard or streetfighter motorcycle that debuted in 2002 as a replacement for the Triumph TT600. The bike remained in production until 2006, when it was replaced by the Street Triple model.

　　From 2002 to 2006, the British company manufactured and sold 4,606 Speed Four motorcycles. Almost a third of that number, 1,011 units to be more exact, were manufactured for the American market, and only 54 units were made for the Canadian market.

　　The 2003 machine packed the same performance, visual, and technical specifications as the previous model without any modifications whatsoever. The naked machine was agile and aggressive and delivered excellent handling with a strong feeling of control.

　　In the aesthetic department, the motorcycle packed the same standard features as the previous model, including two round headlights, a single seat with a pillion cowl, a four-into-one exhaust system with a muffler on the right side, and three-spoke lightweight aluminum wheels.

　　As for the performance figures, the 2003 Triumph Speed Four had installed underneath its fuel tank a 599 cc four-stroke liquid-cooled four-cylinder engine with a fuel injection system in charge, delivering 98 hp at 11,750 rpm and 68 Nm (50 lb-ft) torque at 10,500 rpm.

　　The bike's power was transferred to a six-speed manual transmission with a wet multi-plate clutch and a final X-ring chain drive, pushing the motorcycle to a top speed of 231 kph (144 mph).