2025 KTM 125 SX

There are very few sounds that can't be beaten. The crack of a soda can on a blistering hot day. The ping of the perfectly executed golf shot. And the scream of a 125 cc 2-stroke charging down a long straightaway. The 2025 KTM 125 SX takes its leads directly from the Factory Racing team and puts them to work like nothing else. Like the sound it makes, it cannot be beaten.

ENGINE

• TRANSMISSION 6-speed
• STARTER Electric starter
• STROKE 54.5 mm
• BORE 54 mm
• CLUTCH Wet multi-disc DS clutch, Brembo hydraulics
• DISPLACEMENT 124.8 cm³
• EMS Vitesco Technologies EMS
• DESIGN 1-cylinder, 2-stroke engine
• FUEL-MIXTURE GENERATION Keihin EFI, throttle body 39 mm

CHASSIS

• WEIGHT (WITHOUT FUEL) 92.4 kg
• TANK CAPACITY (APPROX.) 7.2 l
• WHEELBASE1493 mm
• FRONT BRAKE DISC DIAMETER 260 mm
• REAR BRAKE DISC DIAMETER 220 mm
• FRONT BRAKE Disc brake
• REAR BRAKE Disc brake
• CHAIN 520, Non-sealed
• FRAME DESIGN Central double-cradle-type 25CrMo4 steel
• FRONT SUSPENSION WP XACT-USD (AER), Ø 48 mm
• GROUND CLEARANCE 359 mm
• HANDLEBAR Neken, aluminium Ø 28/22 mm
• REAR SUSPENSION WP XACT Monoshock with linkage
• SEAT HEIGHT 958 mm
• SILENCER Aluminium
• STEERING HEAD ANGLE63.9 °
• REAR SUBFRAME DESIGN Aluminum-reinforced polyamide
• SUSPENSION TRAVEL (FRONT)310 mm
• SUSPENSION TRAVEL (REAR)300 mm
• WHEELS Spoked wheels with aluminium rims