MotocrossModel year 2027Global version
KTM 125 SX

KTM 125 SX

Motocross · 124.8 cc

Manufacturer suggested retail price8,449 USDKTM United States · 2026-09-19
Variant
125 SX

Specifications

Engine5 items

Engine configuration
1-cylinder, 2-stroke engine
Engine displacement
124.8ccSource wording: 124.8 cm³
Fuel system
Keihin EFI, throttle body 39 mm
Engine management
Vitesco Technologies EMS
Number of cylinders
Single cylinder

Fuel and transmission5 items

Transmission
6-speed
clutch
Wet multi-disc DS clutch, Brembo hydraulics
Final drive
520, Non-sealed
Fuel tank capacity
7.2L
Fuel tank capacity (as stated in source)
1.9 US gal

Other declared specifications7 items

Clutch primary drive teeth
73
Primary drive
23:73
Clutch operation
Brembo hydraulics
Engine stroke
2-Stroke
Rear subframe design
Aluminum-reinforced polyamide
Front suspension adjustment
Compression (high and low speed), rebound
Rear suspension adjustment
Compression and rebound adjustable

Chassis, brakes and suspension5 items

Frame
Central double-cradle-type 25CrMo4 steel
Front brake
Disc brake
Rear brake
Disc brake
Front suspension
WP XACT-USD (AER), Ø 48 mm
Rear suspension
WP XACT Monoshock with linkage

Dimensions and weight2 items

Seat height
958mm
Weight without fuel
92kg

Sources

Specifications can vary by model year, country and variant.

Site guide