This is from the site Bring a Trailer (https://bringatrailer.com/) ...
This 1980 Suzuki GS450S was acquired by one of the selling dealer’s neighbors in 2013, and the seller purchased the bike from her in early 2019. The bike is powered by a double overhead-cam 448cc parallel twin paired with a 6-speed transmission and is finished in red with black and white graphics and a bikini faring. The selling dealer has replaced the side cover gasket, performed an oil and filter change, and inspected the clutch and ignition components. This GS450S is offered by the selling dealer with a brochure and a clean Oregon title.
The bike is finished in red with black and white graphics. Suzuki described the GS450S as a cafe-style bike, and as such it features a bikini faring, lower handlebars, and 5-way adjustable dampers.
The star-spoked aluminum wheels measure 18″ in diameter and are fitted with IRC Grand High Speed GS-11 tires measuring 3.00-18 at the front and 3.50-18 at the rear. Both tires show 2013 date codes. Braking is handled by a hydraulically-actuated front disc and a mechanical rear drum.
Instrumentation includes an 85-mph speedometer and a 12k-rpm tachometer, with a panel of warning lights and a gear position indicator at the center of the panel. 13k miles are shown, approximately 100 of which were added by the selling dealer.
The 448cc parallel twin features twin Mikuni BS34SS carburetors and sends power to the rear wheel via a 6-speed transmission and chain drive. Factory-rated output was 44 horsepower and 27 lb-ft of torque. The seller serviced the bike with fresh oil and a new side cover gasket.
The included dealer brochure is shown in the gallery below, as is the clean Oregon title. A 6-minute walk-around and ride video is viewable below.