2018 Honda® CB650F In a class of its own Features may include: Engine & Drivetrain Dynamic performance The liquid-cooled 649 cc engine uses compact internal architecture, a quick six-speed low ratio gearbox and starter/clutch layout with cylinders canted forward 30 degrees for a lower centre of gravity, packing a real pound-for-pound punch. Balanced power Tuned for increased torque and effortless performance in low and mid rpm, the proven DOHC 16-valve cylinder head with direct cam actuation and 11.4:1 compression ratio increases peak power delivery at 11,000 rpm. Optimal fuel economy Specific mapping and timing work together to optimize fuel economy and deliver over 350 km in range from the generous 17.3L fuel tank. Streetfighter design The exposed side-swept downpipes pay homage to the vintage CB400 while offering a modern streetfighter design twist. The right side-swept 4-1 exhaust features a dual-pass internal structure to reduce back pressure and deliver an addictive growl, reminding riders of its rich CB heritage. Quality construction Asymmetric piston skirts, ferrous spines on the cylinder sleeves and a silent SV cam chain using a Vanadium coating on its pins ensure reduced friction, minimal oil consumption and improved heat transfer. Quick acceleration Shorter gearing ratios mean the new CB650F is quick off the line, featuring noticeable power and thrust from 5,000 rpm with its stripped down lightweight design. The PGM-FI fuel injection system operates with information from four separate throttle body sensors on 32 mm throttle bores for crisp and accurate throttle response. Sharp response The carefully crafted intake/exhaust system and short air intake funnels deliver an enticing sound at start-up, with a sharper response under acceleration as the throttle opens up and engine revs to higher rpms.