The 2009 Yamaha Roadliner S is a cruiser style motorcycle driven by 1854cc air-cooled 48° V-twin; pushrod OHV, 4 valves/cylinder engine, 100mm x 118mm bore and stroke, 9.48:1 compression ratio, equipped with twin-Bore electronic fuel injection feature throttle position sensor carburetor and 5-speed multiplate wet clutch transmission system, producing 155.1 Nm (15.8 kg-m) maximum torque at 2,500 rpm and 66.4 kW (90 PS) power output at 4,750 rpm. The 2009 Yamaha Roadliner S features: 43mm, twin-bore, downdraft throttle body fuel injection (FI) with throttle position sensor (TPS) ensures great throttle response and maximum power; 12-hole, 2-directional Mikuni fuel injectors produce a wide spray pattern for complete cylinder filling; State-of-the-art Electronic Control Unit (ECU); Air Induction System (AIS); High tech aluminum, die cast, double-cradle frame reduces weight, while balancing strength and rigidity; and many more advanced technologies.
source : http://www.technical-specification.com/2009-yamaha-roadliner-s-specs-engine-feature-picture-and-video#more-1993
