In 2006, Suzuki released the Boulevard S40, the re-baptized version of the Suzuki LS650 Savage that was born in 1986. The S40 retained the character of the old version but proved that the manufacturer focused its attention more on the aesthetic look as the newly released model looked better than the older models.
The bike came with the same custom flat handlebar design that provided a clean and sporty appearance, a one-piece saddle with a low seating position, an attractive teardrop fuel tank with a flushed-mounted speedometer, polished wire-spoked wheels, and custom-styled rear-view mirrors that enhanced the classic appearance like the bigger Boulevard models.
In addition, the 2006 Suzuki Boulevard S40 featured a push-to-cancel turn signal for easy operation, highly visible multi-reflector turn signals, a chromed exhaust system, a small headlight, and a side stand.
The bike took its thrust from a 652cc four-stroke single-cylinder air-cooled engine fuelled by a Mikuni carburetor and delivered an output power of 31 hp at 5,400 rpm and 50 Nm (37 lb-ft) of torque at 3,400 rpm. Also, the model packed a five-speed manual transmission, an electric starter, and a black engine case with polished cylinder head fins for a finished appearance.
For suspension, the bike packed a telescopic fork on the front and five-way adjustable twin shock absorbers mounted on each side of the bike.