Hyosung GT250

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Hyosung GT250R
Hyosung GT250R.jpg
Manufacturer Hyosung
Class Sport bike[1]
Engine Air cooled 249 cc 4-stroke, carbureted (fuel injected as of 2010)
Top speed 175 km/h (109 mph)[citation needed]
Power 28 bhp (21 kW)[citation needed]
Torque 16.7 lb·ft (22.6 N·m) @ 8000 rpm[2]
Transmission 5 speed, wet clutch
Suspension Front: 41 mm (1.6 in) USD Forks
Rear: Mono Shock, Pre-Load Adjustable
Brakes Front: Single/Twin (R only)
Rear: Single
Tires Front: 110/70 54H
Rear: 150/70 69H
Wheelbase 1,445 mm (56.9 in)
Dimensions L 2,080 mm (82 in)
W 655 mm (25.8 in)
H 1,090 mm (43 in)
Seat height 780 mm (31 in)
Weight 168 kg (370 lb)[citation needed] (dry)
Fuel capacity 17 l (3.7 imp gal; 4.5 US gal)
Related Hyosung Comet Series

The Hyosung GT250R is 249 cc (15.2 cu in) motorcycle manufactured by Hyosung Motors & Machinery Inc. It entered the market in 2005, offering a 250 cc class sport bike with a frame similar in size to Hyosung's larger GT650 sport bike.

Engine[edit]

The GT250R comes stock with a 249 cc V-twin engine.[3] The Hyosung V-twin engine was designed in Hamamatsu Japan by a design team consisting of engineers who have previously worked in the research and development teams of Suzuki. Technical features include roller bearing camshafts, two-piece spring dampened bevel silent primary drive gears, dual squish combustion chambers. It utilizes a DOHC eight-valve engine configuration. Twin downdraft Mikuni carburetors were standard until 2008, when fuel injection became available.[4][5] In Brazil, the Hyosung GT250R is sold by Kasinski, named Comet GT250R. These are features that were previously confined to racing engines, and in the past have been uneconomical to incorporate into smaller-capacity engines for street use.Technical/Performance features

  1. Roller bearing camshafts,
  2. Two-piece spring dampened bevel silent primary drive gears,
  3. Dual squelsh combustion chambers.
  4. Proven DOHC four-valve per cylinder configuration,
  5. Twin downdraft Mikuni carburetors(until 2008,when fuel injection became available) provide the highest volumetric efficiency
  6. Air coupled with an oil cooler provide reliability in the harshest conditions.

Fuel economy[edit]

The GT250R's recorded fuel consumption is 3.4 L/100 km (83 mpg-imp; 69 mpg-US)[6] in comparison to 4.59 L/100 km (61.5 mpg-imp; 51.2 mpg-US) recorded on the Kawasaki Ninja 250R. This allows the GT250R 500 km (310 mi) range from its 17 l (3.7 imp gal; 4.5 US gal) fuel tank.[6]

Suspension and handling[edit]

Non-adjustable 41 mm inverted forks are combined with a twin-spar steel frame to provide improved handling. Stock suspension setting is firm, providing stability through corners. Although commonly found only in larger sized sport bikes, the Hyosung GT250R comes standard with a 300 mm front disc setup using twin-piston calipers. Rear brakes is a single 230 mm disc.

2010 model changes[edit]

An Australian press release revealed that the 2010 GT250R has been slightly restyled, the most noticeable change taking place on the rear LED stop/tail-lamp.[7]

Electronic fuel injection will be standard on all of Hyosung's 2010 GTxxx models.[8]

See also[edit]

References[edit]