Hyosung GT125 Comet & GT125R (up to 2009) Specifications – Picture Gallery – Wiki – Manual
Complete specifications for the original Hyosung GT125R and GT125 Comet (2005–2009). Detailed V-twin engine data, chassis info, and official workshop manual links for the pre-facelift models.
Hyosung GT125 Comet & GT125R (2005–2009) – One of the most physically imposing 125cc sports bikes ever sold in the UK. Built on a full-sized chassis with a unique DOHC V-twin engine, these early “pre-facelift” models remain highly sought after for their big-bike feel and classic styling.
Hyosung GT125R & Comet (Pre-Facelift) – Technical Specifications
⚡ Engine & Transmission
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
Fuel System: Mikuni Carburetor / EDGETEK CDI
Gearbox: Constant mesh 5-speed + Chain Drive
🛠️ Chassis, Brakes & Suspension
Front Suspension: GT125R: Upside-down forks | Comet: Standard Telescopic
Rear Suspension: Gas-charged hydraulic mono-shock (Aluminum Swingarm)
Braking: 300mm Front Disc (2-piston) | 230mm Rear Petal Disc
Tyres: 110/70 R17 (Front) | 150/70 R17 (Rear)
📏 Dimensions & Weight
Dry Weight: 128 kg
Seat Height: 810 mm
Fuel Capacity: 17 Litres
Ground Clearance: 155 mm
Community Resources & Shop
📸 Share Your Classic: Still riding a pre-2009 Comet or GTR? Post your photos and setup in our forums to help other owners!
GT125R & Comet (2005-2009) Gallery
Photo Credits: KR Motors Official / Hyosung Archives
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2 Comments
bike not getting spark ,had to take the metal sheet that covers the magnets in the magneto in order to fi a stator from a gtr250 in to a gd 250r
Hi Zach. Go to the homepage of this site and click “post new topic” for any technical advise as this comment is in the wrong place. The /forums/ section are built for that 😉