Hyosung GT125

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Hyosung GT125 Comet
Hyosung GT 125 R.jpg
Hyosung GT125R
Also calledComet GT125
Parent companySuzuki
Engine124 cc DOHC V-twin 8 valve oil cooled
Top speed75 mph - 120.7008 kmph
Power14.2 hp (11 kW) @10,500 rpm
Torque9.70 Nm (1.0 kgf-m or 7.2 ft.lbs) @10,000 rpm
BrakesFront brakes: Double disc
Front brakes diameter: 300 mm (11.8 inches)
Rear brakes: Single disc
Rear brakes diameter: 230 mm (9.1 inches)
TiresFront: 110/ 70-17 54H front
Rear: 150/ 70-17 69H
Wheelbase1,445 mm (56.9 in)
DimensionsL: 2,080 mm (82 in)
W: 760 mm (30 in)
H: 1,120 mm (44 in)
Seat height795 mm (31.3 in)
Weight166 kg (366 lb) (dry)
Fuel capacity17 litres (4.5 US gal)
RelatedHyosung Comet Series

The Hyosung GT125R/Comet is a motorcycle made by Hyosung Motors & Machinery Inc.


This is a fully faired learner legal sports bike. Its main competition is the Yamaha YZF R125. It has a V Twin 2 cylinder engine & dual carburetor configuration.
However, it has massive weight of 180 kilograms (397 lb) when loaded with fuel, and dry, 167 kilograms (368 lb). This is due to sharing the same frame as the gt250.

The ‘Comet’ version comes without a fairing.


It is very common for owners of this motorbike to tune the carburetor with a 'kit up' that usually costs around €100, and supposedly improves the air/gasoline mix situation at every regime, virtually erasing the engine's well-known lack of torque between 6,500 rpm and 15,000 rpm. This is true however, only for models until the year 2006, after which the engine's design was modified to erase this flaw. It is notorious that the problem still arises on the new models, but it can be dealt with by a proper tuning of the poppet valve's backlash every 6,000 kilometres (3,730 mi).