The range of motorcycles in the series had engine displacements between 125 cc and 1150 cc, and include the GS400 and GS500. The GS series also include the original Katana series, although both the 1000 and the 1100 had 16 valves, thus being a GSX. It was however still designated as a GS on some markets, primarily in the US.. 1978 Suzuki GS1000 Suzuki, having made an expensive mistake with the rotary-powered RE-5 in 1975, decided to go along with the UJM in-line fours.
Suzuki was the first Japanese manufacturer to offer a really good suspension when the GS1000 came out with the air/coil sprung forks and adjustable damping shocks.. Suzuki GS1000LMotorcycle Specifications Overviews and Road Tests