All it takes is one hard, fast rip into a loamy berm to know that the 2023 KTM 125 SX is a serious contender in the 125 cc race. Not only has the ‘Ring-ting-ting’ been given a fuel-injected revival, but the entire motorcycle also benefits from class-leading developments at every end. Boasting accolades such as being the leader in 2-stroke motocross innovation in the modern era, the 2023 KTM 125 SX simply slays the rest of the 125 cc class. All you need do is prod the starter, blip the throttle and let rip.
6-speed
Electric starter
54.5 mm
54 mm
Wet multi-disc DS clutch, Brembo hydraulics
124.8 cm³
Vitesco Technologies EMS
1-cylinder, 2-stroke engine
92.4 kg
7.2 l
260 mm
220 mm
Disc brake
Disc brake
X-Ring 5/8 × 1/4”
Central double-cradle-type 25CrMo4 steel
WP XACT-USD, Ø 48 mm
359 mm
WP XACT Monoshock with linkage
958 mm
63.9 °
310 mm
300 mm