Naked Motorcycles

2012Hyosung GT125

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The 2012 Hyosung GT125 is a sporty 125cc commuter bike designed for new riders and urban commuters seeking an affordable entry into motorcycling. Its compact V-twin engine delivers modest power suitable for city riding, while the sport-oriented styling gives it genuine character beyond typical learner bikes. Known for reliability and value, it balances performance with fuel efficiency for budget-conscious riders.

Capacity: 125.0 ccm
Engine: V-Twin, four-stroke
Gearbox: 5-speed
Dry weight: 166.0 kg
Seat height: 795 mm
Power: 14.2 HP (10.4 kW) @ 10500 RPM

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What’s new for the 2012 Hyosung GT125

vs the 2011

Spec	2011	2012
Front suspension	Conventional fork	Telescopic fork

Other years 2006 2007 2008 2009 2010 2011 2012 2013

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail10%

Cornering45%

City riding60%

Daily riding55%

Touring25%

Two-up25%

Track20%

Best for: It's built as a lightweight commuter with sporty styling rather than a genuine high-performance sportbike.
Built for: The V-twin engine gives it a slightly more characterful exhaust note and feel than typical single-cylinder 125s, but performance remains modest.
Not ideal for: It's not suitable for riders seeking real touring range, passenger comfort, off-road capability, or highway-speed performance.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

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Your height

Inseam (optional)

Units

At 795mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with both feet flat on the 2012 Hyosung GT125, with a relaxed knee angle of around 120 degrees and a forward-leaning riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at 751-820 mm — Middle Ground →

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Full specifications

Engine

Capacity: 125.0 ccm
Power: 14.2 HP (10.4 kW) @ 10500 RPM
Torque: 10.2 Nm (1.0 kgf-m) @ 9750 RPM
Engine type: V-Twin, four-stroke
Power/weight ratio: 0.0855 HP/kg (dry)
Bore x stroke: 44.0 x 41.0 mm
Compression: 11.3:1
Cooling system: Oil & air
Fuel system: Carburettor
Starting: Electric
Ignition: CDI
Valves per cylinder: 4
Lubrication system: Wet sump

Transmission

Gearbox: 5-speed
Transmission type: Manual
Final drive: Chain
Clutch: Wet multiplate

Performance

Top speed: 110.0 km/h (68.4 mph)

Dimensions & weight

Wheelbase: 1445 mm
Overall length: 2080 mm
Overall width: 760 mm
Overall height: 1120 mm
Seat height: 795 mm
Dry weight: 166.0 kg
Fuel capacity: 17.00 litres
Ground clearance: 130 mm
Reserve fuel capacity: 2.50 litres

Chassis & suspension

Front suspension: Telescopic fork
Rear suspension: Swing arm with Hyeraulic Double shock absorber
Front wheel travel: 120 mm
Rear wheel travel: 110 mm

Brakes & wheels

Front brakes: Single disc
Front brakes diameter: 300 mm
Rear brakes: Single disc
Rear brakes diameter: 230 mm
Front tyre: 110/70-17
Rear tyre: 150/70-17

Other

Color options: Black, white

Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.

What changed, year to year

Differences highlighted

Specification	2006	2008	2010	2011	2012	2013
Capacity	125 cc	125 cc	125 cc	125 cc	125 cc	125 cc
Dry weight	150 kg	150 kg	150 kg	167 kg	166 kg	167 kg
Seat height	795 mm	795 mm	795 mm	795 mm	795 mm	795 mm
Fuel capacity	17 L	17 L	17 L	17 L	17 L	17 L