2008 Hyosung Comet GT650

Motorcyclist Online helps you research the used 2008 Hyosung Comet GT650 before buying this Standard bike. The 2008 Comet GT 650 is made in South Korea. With front Dual Disc brakes that will securely stop this Comet GT650 motorcycle on demand. ...     read more
click to expand
Bg Badge

2008 Hyosung Comet GT 650

Model Overview:

2008 Comet GT650

Bodystyle Standard
Warranty 24 months
Manufacturer Country South Korea
Introduction Year N/A
Displacement (cc) 647
Engine Type V Twin
Nextstep Bg

2008 Hyosung Comet GT650


By the 2008 model year of the Hyosung Comet, its manufacturer – South Korean S&T Motors Co. Ltd. – had four models for the standard motorcycle: the GT250, GT250R, GT650 and GT650R. The manufacturer""s suggested retail prices are $3,399 for the GT250, $3,799 for the GT250R, $5,099 for the GT650 and $6,099 for the GT650R.

The models of the 2008 Hyosung Comet are mainly named after the displacement of their engines: 249 cubic centimeters (cc) for the GT250 series (rounded up to 250) and 647 cc for the GT650 series (rounded up to 650). The ""R"" suffix signifies the more powerful, racing-oriented variants of the GT250 and GT650.

Each 2008 Hyosung Comet has a four-stroke V-twin (two-cylinder) engine, with four intake valves However, the one on the GT250 series generates 27.5 horsepower at 10,250 revolutions per minute (RPM) and 21 pound-feet (lb-ft) at 7,500 RPM, while the one on the GT650 series pumps out 76.4 horsepower at 9,000 RPM and 50.2 lb-ft at 7,000 RPM. Also, the two Mikuni carburetors are larger on the GT650 series: 39 millimeters (mm) as opposed to 26 mm on the GT 250 series.

The engine on the 2008 Hyosung Comet is paired with a five-speed manual transmission. For fuel, each bike has a gas tank that can hold up to 4.5 gallons (17 liters), with a 0.7-gallon (2.5-l) on the GT650 series.

The 2008 Hyosung Comet is available in three color schemes: Black, Mango Yellow, and Red. Although designed primarily as a naked bike, the GT650R version is fully dressed: with full fairing and a rear spoiler in addition to the standard fenders, fork guards and side covers. The two-piece seat on each bike is big enough for two occupants. The digital instrumentation consists of a tachometer, trip odometer, speedometer, temperature warning gauge and fuel level warning light. A clock is added on the GT650 series, with the fuel level warning indicator a gauge instead of a light. Disc brakes are fitted on each of the ""08 Comet""s 17-inch aluminum wheels for superior braking power. Other features on the bike include rearview mirrors, halogen lighting, and under-seat and lockable storage.

The GT650 series generally has smaller physical measurements than the GT250 series. For instance, it has a smaller wheelbase: 56.5 inches (1,435 mm), compared to the GT250""s 56.9 inches (1,445 mm). However, the GT650 variants tend to be heavier. While the GT250 series has a dry weight of 330.7 lbs. (150 kilograms), the GT650 series has a dry weight of 421.1 lbs. (191 kg).

New For 2008
  • This is the fourth model year of the Hyosung Comet; no changes were made.

2008 Hyosung Comet Specs

  • Model: Standard (2008 Hyosung Comet GT250, GT250R, GT650, GT650R)
  • Engine Type: 249cc four-stroke air/oil-cooled V-twin two-cylinder (GT250 and GT250R); 647cc four-stroke liquid-cooled V-twin two-cylinder (GT650 and GT650R)
  • Bore and Stroke (millimeters/inches): 57/2.24 x 48.8/1.92 (GT250 and GT250R); 81.5/3.21 x 62/2.44 (GT650/GT650R)
  • Compression ratio: 10.2:1 (GT250 and GT250R; 11.6:1 (GT650 and GT650R)
  • Valve Train: Double overhead camshaft (DOHC), four valves per cylinder
  • Induction: Two 26-millimeter (GT250 and GT250R)/39-millimeter (GT650 and GT650R) Mikuni carburetors
  • Ignition: Electric
  • Transmission: Five-speed manual
  • Final Drive: Chain
  • Fuel Capacity (gallons/liters): 4.5/17, with 0.7/2.5 on the GT650 and GT650R
  • Estimated Fuel Economy (miles per gallon): N/A
  • Brakes (Front): 11.8-inch/300-millimeter disc (GT250); 11.8-inch/300-millimeter dual disc (GT250R, GT650 and GT650R)
  • Brakes (Rear): 9.1-inch/230-millimeter disc
  • Suspension (Front): 1.4-inch/35-millimeter inverted fork (GT250 and GT250R); 1.6-inch/43-millimeter (GT650 and GT650R)
  • Suspension (Rear): Steel twin-sided swing arm, with two shock absorbers (GT250 and GT250R) or one shock absorber (GT650 and GT650R)
  • Wheelbase (inches/millimeters): 56.9/1445 (GT250 and GT250R); 56.5/1435 (GT650 and GT650R)
  • Rake: N/A
  • Trail: N/A
  • Seat Height (inches/millimeters): 31.3/795 (GT250); 30.7/780 (GT250R); 30.7/780 (GT650 and GT650R)
  • Curb Weight (lbs./kg): 330.7/150 (GT250 and GT250R); 421.1/191 (GT650 and GT650R)
  • Tires (Front): Tubeless 110/70 R17 54H on aluminum wheel (GT250 and GT250R); tubeless 120/60 ZR17 55W on aluminum wheel (GT650 and GT650R)
  • Tires (Rear): Tubeless 150/70 R17 69H on aluminum wheel (GT250 and GT250R); tubeless 160/60 ZR17 69W on aluminum wheel (GT650 and GT650R)


  • BMC air filter
  • Radial tires
  • Brake pad

Key Competitors For The 2008 Hyosung Comet

  • 2008 Suzuki GSX
  • 2008 Kawasaki Ninja
  • 2008 Suzuki SV

Available Comet Sub Models

2008 Hyosung Comet GT250 Buyer's Guide 2008 Hyosung Comet GT250
27.5 / 21
2008 Hyosung Comet GT650R Buyer's Guide 2008 Hyosung Comet GT650R
76.4 / 50.2
2008 Hyosung Comet GT250R Buyer's Guide 2008 Hyosung Comet GT250R
27.5 / 21
  • Motorcyclist Online