Hyosung RT125: history, specs, pictures

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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[edit]

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[edit]

The bike has a 5-speed transmission. The final drive was via chain. Power was moderated via the wet, multiplate.

Chassis[edit]

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.

In Media[edit]

Hyosung RT125
Manufacturer
Also called RT 125 D, RT 125D, RT125D, RT125 Karion, RT 125 Karion, RT 125
Production 2004 - 2016
Class Road
Engine
single cylinder, four-stroke
Bore / Stroke 57.0mm x 48.8mm
Top Speed 65 mph (105 km/h)
Horsepower 13.28 HP (9.9 KW) @ 10000RPM
Torque 6.93 ft/lbs (9.4 Nm) @ 6500RPM
Fuel System carburetor
Ignition electronic
Transmission Gear box: 5-speed

Final Drive: chain

Clutch: wet, multiplate
Suspension Front: telescopic fork
Rear: monoshock
Brakes Front: single disc
Rear: expanding brake (drum brake)
Front Tire 130/80-18
Rear Tire 180/80-14
Wheelbase 53.15 inches (1350 mm)
Length 82.09 inches (2085 mm)
Width 33.46 inches (850 mm)
Height 44.29 inches (1125 mm)
Seat Height 31.1 inches (790 mm)
Weight 297.62 pounds (135.0 Kg) (dry), 136.0 kg (wet)
Fuel Capacity 2.4 Gallon (9.10 Liters)
Fuel Consumption 3.02 liters/100 km (33.1 km/l or 77.89 mpg)
Manuals Service Manual


The Hyosung RT125D was a single cylinder, four-stroke Road motorcycle produced by Hyosung 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[edit]

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. Fuel was supplied via a double overhead cams/twin cam (dohc).

Drive[edit]

The bike has a 5-speed transmission. Power was moderated via the wet, multiplate.

Chassis[edit]

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 equipped 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.

In Media[edit]