In 2005 Suzuki revamped its cruiser line by eliminating its variety of cruiser names including the Intruder, Marauder, Volusia and Savage, and consolidating all the models under the Suzuki Boulevard banner and giving individual motorcycles alphanumeric designations. The alphabetic aspect of the new Suzuki Boulevard line included the S models which were the standard cruisers, the C series was reserved for more classically-styled cruisers while the M series was only for high-performance models. The numeric part of the designation stood for engine displacement in cubic inches. In 2006 the Suzuki Boulevard line included the S40, S50, S83, C50, C90, M50, and M109R.
The S models in the Suzuki Boulevard series were largely the rebadged Intruder models which can trace their roots back to the introduction of the original Intruder 700 in 1986. The Suzuki Savage was renamed the S40. The S40 Suzuki Boulevard is powered by a 40 cu. in. (652cc) air-cooled single-cylinder engine producing 30 horsepower. The Savage was introduced in 1986 and presently continues in the Suzuki line-up as the S40. The Intruder 800 was replaced by the S50, while the Intruder 1400 was replaced by the S83. The S50 is the cousin to the original Intruder 700, now with a new name and a 50 cu. in. (819cc) V-Twin engine. The S83 (Intruder 1400) is powered by a liquid-cooled, 1360cc V-Twin engine producing 72 horsepower.