Yamaha XS1

The Yamaha XS-1 was a Air Cooled, Four Stroke, Parallel Twin Cylinder, SOHC, 2 Valves Per Cylinder Naked motorcycle produced by Yamaha in 1970. Max torque was 39.83 ft/lbs (54.0 Nm) @ 6800 RPM. Claimed horsepower was 52.97 HP (39.5 KW) @ 7200 RPM. A 75mm bore x 74mm stroke result in a displacement of 654 cubic centimeters. The bike has a 5 Speed transmission. It came with a 3.50-19 front tire and a 4.00-18 rear tire. Stopping was achieved via Drum in the front and a Drum in the rear. The front suspension was a Telescopic Forks while the rear was equipped with a Dual Shock Absorbers.