Suzuki GT 250

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Suzuki
Suzuki GT 250.JPG
Suzuki GT 250 with RAM-Air-System
GT250
Manufacturer Suzuki Motor Corporation
Production period 1973 to 1982
class motorcycle
design type Sports Tourer
Motor data
air-cooled, 2-stroke, 2 cylinders
Displacement  (cm³) 247
Power  (kW / PS ) 22/30
Torque  ( N m ) 26.7
Top speed (  km / h) 144-152
transmission 6 courses
drive Chain
Brakes Disc / drum
Wheelbase  (mm) 1,300
Empty weight  (kg) 155
Previous model Suzuki T 250
successor Suzuki RG 250
Racing motorcycle based on a GT125

The Suzuki GT 250 is a motorcycle from the Japanese manufacturer Suzuki . It is the successor to the T20 and T 250, which have been built since the early 1960s, also with 250 cm³ and came onto the market in 1973 under the name GT 250 K.

The first variants (K, L, M) were even more powerfully motorized than the later X7 and reached a top speed of 150 to 155 km / h (factory specification 145 km / h). The factory specifications about power and top speed were, as was common with Suzuki at the time, rather an understatement.

The Suzuki GT 250 was in direct competition with the Yamaha RD 250 and was used in a modified form for numerous club sport races. A special feature of the GT 250 was the RAM-Air system , which consisted of an additional heat sink above the cylinder head. The air flow under the RAM-Air was additionally accelerated by its conical shape, which led to higher cooling performance and less air turbulence. The cooling was very efficient, which meant that the series engine could be equipped with higher performance. The first models were already equipped with a disc brake with a 1-piston floating caliper at the front. Another special feature was the high-performance capacitor ignition (HKZ) that was adopted from racing. The vacuum-controlled “diaphragm” gasoline valve was particularly innovative for a motorcycle of this class.

From 1976 it was sold without the RAM-Air system.

The last model was the GT 250 X 7 . The X 7 had a dry weight of 141 kg, a full tank of approx. 157 kg and the German version had a top speed of 155 km / h with 20 kW / 27 PS entered in the registration papers. The six-speed gearbox could be shifted precisely and very smoothly. Compared to modern motorcycles, however, actuating the clutch requires a relatively large amount of force. Another negative thing about the X7 was that the chain was far too weak, which increased wear. The engine could be considered reliable if enough attention was paid to the correct mixture preparation by the two carburettors and permanent oil lubrication of the two-stroke engine . The electrical system was manageable and less prone to errors, as luxuries such as an electric starter had been dispensed with.

The Suzuki GT 250 was a successful mid-range motorcycle in the early to mid-1970s, competing with the Honda CB250 and the Yamaha RD 250 . As a two-stroke machine, it scored with a good torque curve.

The Suzuki GT 250 belongs to the two-cylinder GT model series like the GT 125 , GT 185 and GT 500, of which three larger, three-cylinder sister models were built, some with the same technology: GT 380 , GT 550 and the liquid-cooled GT 750 (nickname Water buffalo ).

Type designations

  • Bj 1973. GT 250 K , 31 hp at 7,000 min -1 , 32 Nm at 5500 min -1
  • Bj 1974. GT 250 L , 30 hp at 6,000 min -1 , 32 Nm at 5500 min -1
  • Year 1975: GT 250 M ,
  • Bj 1976. GT 250 A , 26.4 hp at 7,500 min -1 , 32 Nm at 5500 min -1
  • Bj 1977. GT 250 B , 26.4 hp at 7,500 min -1 , 24.7 Nm at 7500 min -1
  • Year 1977. GT 250 Sport , 26 hp at 7,500 min -1 , 24.7 Nm at 7,500 min -1

Special series for Germany of 1000 copies, with half fairing, Tommaselli clip-ons and H4 headlights. Price 1977: 3,999 DM

  • Bj. 1978-1982: GT 250/2 X 7 (RG 250) with wire wheels + GT 250/2 X 7 E (RG 250 E) with casting wheels, 27 hp at 7,500 min -1 , 24.7 Nm at 7500 min - 1

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