Hyosung RT125
The Hyosung RT125D was a single cylinder, four-stroke allround motorcycle produced between 2004 and 2016. It could reach a top speed of 65 mph (105 km/h). Max torque was 6.93 ft/lbs (9.4 Nm) @ 6500 RPM. Claimed horsepower was 13.28 HP (9.9 KW) @ 10000 RPM.
Engine
The engine was a oil & air cooled single cylinder, four-stroke. A 57.0mm bore x 48.8mm stroke result in a displacement of just 124.5 cubic centimeters. The engine featured a 11.3:1 compression ratio. Fuel was supplied via a double overhead cams/twin cam (dohc).
Drive
The bike has a 5-speed transmission. The final drive was via chain. Power was moderated via the wet, multiplate.
Chassis
It came with a 130/80-18 front tire and a 180/80-14 rear tire. Stopping was achieved via single disc in the front and a expanding brake (drum brake) in the rear. The front suspension was a telescopic fork while the rear was equiped with a monoshock. The RT125D was fitted with a 2.4 Gallon (9.10 Liters) fuel tank. The bike weighed just 297.62 pounds (135.0 Kg). The wheelbase was 53.15 inches (1350 mm) long.