2004 Yamaha Raptor 660R Specifications Engine: Engine configuration Single-Cylinder How many cylinders 1 Types of power cycles Four-stroke Horsepower RPM 9000 Type of cooling system Liquid / Air Valves 5 Valves Per Cylinder 5 Valve types and configurations Single Overhead Camshaft Bore (millimeters/inches) 100 / 3.94 Stroke (millimeters/inches) 84 / 3.31 Engine displacement (cubic centimeters.. The Yamaha Raptor 660 is no slouch in this department, offering impressive speed capabilities that make it a top choice for thrill-seekers. Here's a breakdown of the speed-related aspects you should know. Top Speed. The Yamaha Raptor 660 can reach a top speed of approximately 70 mph (113 km/h) under optimal conditions.
Specs, Key Features & Performance Engine & Drivetrain.. Powered by a 660cc single-cylinder engine with a power output of around 36 horsepower, the Raptor 660 top speed is between 72 and 75 mph. While that top speed range is specific to models still in fully stock form, the top speed of a Raptor 660 can be increased to 85 mph and beyond for.. Yamaha Raptor 660 Specs. Engine. The Raptor 660 uses a four-stroke, liquid-cooled, single-cylinder SOHC engine with a bore-stroke ratio of 100 × 84 mm (3.94 × 3.31 inches). It has an engine displacement of 660 cubic centimeters, a compression ratio of 9.2:1, and a dry-sump lubrication system.