This 1985 Honda CB650SC Nighthawk is finished in Candy Scorpio Red and powered by a 655cc inline-four equipped with a chrome four-into-two exhaust system and four Keihin carburetors. Shifting is through a six-speed transmission, and additional equipment includes an electric starter, an enclosed driveshaft, twin front disc brakes, cast-alloy wheels, and a black two-up seat. The selling dealer acquired the bike in 2026, and work performed in preparation for the sale consisted of replacing the tires, fork seals, camshaft chain tensioner return spring, and camshaft cover gasket, as well as changing the engine and fork oil and final drive fluids. This Nighthawk is now offered at no reserve by the selling dealer with a clean Wisconsin title.
The bodywork is finished in Candy Scorpio Red and is set over a black double-cradle steel frame. Details include a 3.4-gallon fuel tank, a brushed aluminum grab handle and upswept tail section trim, folding passenger foot pegs, street lighting, twin mirrors, and both center and side stands. The stepped two-up seat wears a replacement black vinyl cover installed under prior ownership.
Cast-alloy wheels measuring 19″ and 16″ were recently mounted by the selling dealer with replacement Shinko tires. Adjustable suspension consists of a 39mm leading-axle fork featuring Honda’s TRAC anti-dive technology and dual chrome shocks mounted to the final drive housing on the left and the swingarm on the right. Braking is handled by dual front discs and a rear drum. The selling dealer states the brake and clutch master cylinders were updated from items sourced from a Kawasaki Ninja, and the fork received replacement seals and oil.
The chrome handlebar is secured to the upper triple clamp with pull-back risers. The rectangular Nippon Seiki instrument cluster houses a 150-mph speedometer and a tachometer with a 10k-rpm redline as well as digital readouts for fuel level and gear selection. The five-digit odometer shows 24k miles.
The air-cooled 655cc DOHC inline-four is equipped with an external oil cooler, an electric starter, four Keihin carburetors, and a chrome four-into-two exhaust system with upswept slash-cut silencers. Output was factory-rated at 72 horsepower and 42 lb-ft of torque. Service in preparation for sale included replacing the camshaft chain tensioner return spring and camshaft cover gasket, and changing the oil. The aluminum finish on the left side crankcase cover shows fading.
Power is sent to the rear wheel through a hydraulically actuated clutch, a six-speed transmission, and a driveshaft enclosed within the left leg of the swingarm. The final drive fluid was recently changed.