The Suzuki GT 550 was part of their famous GT (Grand Touring) series of the 1970s, which included the GT750 and GT380. Manufactured over six years (1972 to 1977), the GT550 was available in 6 different models, starting with the 1972 GT550J and ending with the 1977 GT550B. As a result, each year the motorcycle came with improved features, although the main specifications were they remained almost unchanged. Overall, more than 60,000 units of this touring bike were sold worldwide, making it one of the most popular high-end Suzuki machines of that time.

At the heart of the Suzuki GT550 was a powerful 543cc engine that was one of the first three-cylinder two-stroke motorcycles to be seen on UK roads. Drawing heavily on technologies developed for Suzuki racing motorcycles, the GT550 incorporated several unique features. One of these was the piston air control system, which forced airflow over the internal cylinders, helping to keep operating temperatures under control. This was important as Suzuki realized that two-stroke engines lose power quickly when overheated, which would affect any touring experience. As a result, the Suzuki GT550 was one of the first large two-stroke motorcycles that could ride comfortably for several hours at a time. It also featured automatic fuel oil mixing and visible emission control.

The Suzuki GT550’s engine gave out 48.5 hp at 6,500 rpm (upgraded to 53 hp in later models), giving it plenty of oomph for the big 440-pound motorcycle. On the open road, riders can use the 5-speed constant mesh transmission to achieve top speeds in excess of 100 mph, making this bike compatible with even more powerful street bikes. Previous models came with drum brakes only, although Suzuki quickly adopted a disc brake for safer braking. The long wheelbase and stable suspension made the GT550 quite stable and manageable for its size, enhancing the driving experience.

Although the Suzuki GT550 was a popular touring motorcycle throughout the 1970s, some of its glory was stolen by the more glamorous GT750, which participated in various races. As a result, most collectors and enthusiasts would prefer other GTs, although there is still a strong group loyal to this brilliant design. It can be difficult to find original spare parts, so it is advisable to always consult with trusted dealers. After all, with proper care and maintenance, a Suzuki GT550 still offers performance that rivals many current production bikes.

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