Hyosung GT125 - 2013 Specifications and Reviews

The 2013 Hyosung GT125 is an entry-level sport bike featuring a distinctive 75-degree V-twin engine that delivers 14.2 horsepower and a top speed of 110 km/h. Designed for novice riders and commuters seeking sporty styling, it combines lightweight handling with reliable carbureted engine technology. Known for its affordable price point and accessible performance characteristics, the GT125 remains a practical choice for riders transitioning into sports bikes.

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General information

CategorySport
Year2013
ModelHyosung GT125
 
 

Engine and Transmission Specifications

ClutchWet multiplate
Transmission type,final driveChain
Gearbox5-speed
Cooling systemOil & air
Lubrication systemWet sump
IgnitionCDI
Fuel controlDOHC
Fuel systemCarburettor. 2 x 26mm BDS26 Mikuni
Valves per cylinder4
Bore x stroke44.0 x 41.0 mm (1.7 x 1.6 inches)
Compression11.3:1
Top speed110.0 km/h (68.4 mph)
Torque9.70 Nm (1.0 kgf-m or 7.2 ft.lbs) @ 10000
Power14.20
Engine details75 degree V twin
Engine typeV2, four-stroke
Capacity:125.00 ccm (7.63 cubic inches)
 
 

Brakes, suspension, Frame and wheels

Rear brakes diameter230 mm (9.1 inches)
Rear brakesSingle disc
Front brakes diameter300 mm (11.8 inches)
Front brakesSingle disc. Semi floating disc
Rear tyre dimensions150/70-17
Front tyre dimensions110/70-17
Rear suspension travel110 mm (4.3 inches)
Rear suspensionSwing arm with Hyeraulic Double shock absorber
Front suspension travel120 mm (4.7 inches)
Front suspensionConventional fork

Physical measures and capacities

Reserve fuel capacity2.50 litres (0.66 gallons)
Fuel capacity17.00 litres (4.49 gallons)
Wheelbase1,445 mm (56.9 inches)
Ground clearance180 mm (7.1 inches)
Overall width760 mm (29.9 inches)
Overall length2,080 mm (81.9 inches)
Overall height1,120 mm (44.1 inches)
Seat height795 mm (31.3 inches) If adjustable, lowest setting.
Power/weight ratio0.0850 HP/kg
Dry weight167.0 kg (368.2 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
CommentsMade in South Korea.
Color optionsBlack, white, red
Factory warranty24 months
StarterElectric

Performance Profile & Rider Fit

14.2 hp
Peak Power
12.5s
0-60 mph
68.4 mph
Top Speed

Best For

Track20%
City60%
Cornering45%
Daily Riding55%
Touring25%
Passenger25%

Rider Profile

Best ForThis bike suits beginner riders or those wanting a low-stress, non-intimidating small-capacity machine.
PurposeIt's built as a lightweight commuter with sporty styling rather than a genuine high-performance sportbike.
Rider FitIts low seat height and modest weight make it manageable for shorter or less physically strong riders.
CharacterThe V-twin engine gives it a slightly more characterful exhaust note and feel than typical single-cylinder 125s, but performance remains modest.
Not Ideal ForIt's not suitable for riders seeking real touring range, passenger comfort, off-road capability, or highway-speed performance.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2013 Hyosung GT125 Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 795mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2013 Hyosung GT125, with a cramped knee angle of around 70 degrees and a forward-leaning riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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