Hyosung GT125P & GT125RC (from 2009) Specifications - Picture Gallery - Wiki

Hyosung GT125 Comet & GT125R Specifications
(from 2009/2010)

The post-2009 Hyosung GT125 series introduced a fresh facelift, new black engines, and updated suspension components. These models, including the GT125R and GT125 Comet, combined modern styling with proven 125cc performance, keeping the series popular among UK riders.

📝 General Info

Model: Hyosung GT125R / GT125 Comet
Years: 2009 onward (new models)
Category: Sports
Also known as: GTR, GT, Comet R Supersport, Comet Naked (GTP / GT-RC)
Changes / Features: Full facelift with black engines, lighter side casings than previous grey models. GTR black forks became standard, and both GT & GTR received shock updates.

⚙️ Engine & Transmission

Displacement: 125cc
Engine Type: Air/Oil-cooled DOHC 8-valve 75° V-twin
Power: 14.2 hp (11 kW) @ 10,500 rpm
Top Speed: ~75–80 mph
Bore x Stroke: 44 x 41 mm
Valves per Cylinder: 4
Fuel System: Mikuni Carburetor
Lubrication: Wet sump oil
Ignition: EDGETEK CDI
Cooling: Oil cooler & air cooling
Compression Ratio: 11.3:1
Fuel Consumption: ~50–60 mpg (reported)
Final Drive / Gearbox: Constant mesh, close-ratio 5-speed (1 down, 4 up) + chain

🛠️ Chassis, Suspension & Brakes

Frame: Tubular steel frame
Front Suspension: GT125R – Upside-down forks; GT125 Comet – Standard silver forks
Rear Suspension: Dual side aluminum swingarm with gas-charged hydraulic mono-shock
Front Tyre: 110/70 R17 54H
Rear Tyre: 150/70 R17 69H
Front Brakes: Semi-floating single disc, 2-piston caliper
Front Brake Diameter: 300 mm
Rear Brakes: Petal-shaped single disc, 2-piston caliper & stainless hose
Rear Brake Diameter: 230 mm