Triumph Speed Four
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Introduced in 2002, the Triumph Speed Four is the naked (non-faired) brother of the TT600 sport bike introduced in 1999. While the TT600 was prone to fuel injection problems, these were fixed for the 2002 Speed Four. While aesthetically similar to the larger Speed Triple, the Speed Four has an entirely different frame and engine. Power comes from a 599 cc inline-four-cylinder engine, the same engine in the TT600 but tuned for better midrange, it produces 98 hp (73 kW) @ 11,750 rpm, with a 13,500 rpm redline, and 50.2 lb·ft (68.1 N·m) of torque at 9,750 rpm. Dry weight is 375 lb (170 kg). The bike has a top speed of 135 mph (217 km/h) and a 0–60 mph (0–97 km/h) time of about 3.5 seconds.
The Speed Four is mechanically similar to its predecessor, the TT600, with the exceptions of the cam profiles, ignition and fuel injection mapping, front spring rate, and other minor concessions to its streetfighter style; the frame and fully adjustable suspension are race-ready. The Speed Four's only aesthetic relationship to the Speed Triple is the bug-eyed headlight pair and bikini fairing; the Speed Four even retains the clip-ons of the TT600, versus the motocross inspired handlebars of the Speed Triple and other streetfighters like the Tuono, FZ-1, Monster, etc.
The Speed Four was voted No.1 for handling and suspension in Ride magazines Rider Power Survey,[1] Triumphs Daytona 675 was second in the same category.
[edit] References
- ^ (in English). Motorcycle News. http://www.motorcyclenews.com/MCN/News/newsresults/mcn/2008/November/24-30/nov2408-rider-power-2008-best-handling-bikes/. Retrieved 2008-11-24
