The GSX Series
's range of sport touring motorcycles with four-valved engines. The earliest GSX models were introduced in the early 1980s to complement and later replace the two-valve Suzuki GS series
The current range of bikes by that name are completely different designs that use derivatives of former super sports engines from the early-to-middle GSX-R series
Among the earliest GSX models were the two-cylinder GSX 250
and the GSX 400
These Suzuki GSX models were the evolution of the GS series of 2-valve per cylinder air and oil cooled four stroke motorcycles. The first 4-valve engines were produced for the 1980 model year, but retained the "GS" designation for the US and Canadian markets until the release of the GSX-R models in 1986 (1985 outside the US). These GSX engines were based on Suzuki's "TSCC" (Twin-Swirl Combustion Chamber) engine design, and shared little with previous 2-valve models. The bike called Suzuki Katana
in the US had this engine design, with designations of GSX-S, but has little in common with the more modern GSX-F Katanas, which are sport-touring bikes.
The early GSX four-cylinder engines are arguably among the most reliable motorcycle engines ever mass-produced, with the 1100cc and 1150cc engines still very commonly used for drag racing
competition in the US.
The TSCC engine was once again redesigned in 1983 with the introduction of a completely new GSX 750
, Suzuki's first modern... Read More