2015 KTM 125 SX, DIMENSIONS Weight 203 lbs. (92.1 kg) dry Ground Clearance 15.55 in. (395 mm) unloaded Wheelbase 58.27 ?? 0.39 in. (1,480 ?? 10 mm) Seat Height 39.06 in. (992 mm) ENGINE Engine 1-cylinder, 2-stroke, with reed intake and exhaust control Displacement 7.62 ci (124.8 cc) Bore x Stroke 2.13 x 2.15 in. (54 x 54.5 mm) Fuel Tank Capacity 1.98 gal. (7.5 l) Ignition Contactless controlled fully electronic with digital adjustment, type Kokusan Starting Kick-start Clutch Wet multi-disc / Brembo hydraulics Cooling Water DRIVETRAIN Transmission 6-gear, claw shifted Primary Drive 23:73 Final Drive 13:50 BRAKES/WHEELS/TIRES Brakes System: Disc, calipers on floating bearingsFront: 10.24 in. (260 mm) diameterRear: 8.66 in. (220 mm) diameter