The Suzuki RG 125 was launched 1978, simultanously with RG 185, formerly knows as GT 125 and GT 185 with new paint jobs. Neverthelsess, the RG 125 was still sold in some countries with its old name, GT 125. In some countries the model was known as X4. The RG 125 didn't have the Ram-Air cylinder head of the older GT 125.
|engine specs||Type:||Single cylinder, two-stroke, piston valve||Displacement:||124 cm3||Bore X Stroke:||1.7x1.7 in OR 43 mm||Compression Ratio:||6.8:1||Horsepower:||16/9500 KW(hp)/RPM||Torque:||9/8500 lb-ft/RPM OR 12/8500 Nm/RPM||Fuel System:||Carburetor|
|transmission specs||Gearbox:||5-Speed||Clutch:||Wet, multiplate||Primary Drive:||-||Final Drive:||Chain|
|chassis specs||Frame:||Steel pipe, single cradle||Front Suspension:||Telescopic, oil dampened||Rear Suspension:||Swingarm, dual shocks, coils, oil dampened||Front Brake:||Single disc, hydraulic||Rear Brake:||Drum, internal expanding|
|dimension specs||Overall Length:||74.8 in OR 1900 mm||Overall Width:||30.3 in OR 770 mm||Seat Height:||-||Weelbase:||48.4 in OR 1229 mm||Ground Clearance:||-||Weight:||236 lbs OR 107 kg||Fuel Capacity:||-|
|power system specs||Power pack:||-||Nominal Capacity:||-||Maximum Capacity:||-||Charger type:||-||Charging time (normal):||-||Charging time (quick):||-||Range:||-|