Suzuki GS series

The Suzuki GS series was Suzuki Motor Corporation's first full range of four-stroke road motorcycles, after it had produced almost exclusively two-stroke machines. The first models were the four-cylinder GS750 and the GS400 parallel twin, released in November 1976. The GS750 engine was patterned on the Kawasaki Z1-900 and became the design basis for all air-cooled Suzuki four-stroke fours until the air-oil cooled GSX-R. The range grew to include the GS550 and GS1000 in 1977, 125 cc singles such as the GS125 and retro machines such as the GS1200SS. Tuned by Pops Yoshimura, the GS1000 won the 1978 Daytona Superbike race and the 1978 Suzuka 8 Hours, and Wes Cooley took the AMA Superbike championship on one in 1979 and 1980.