• 2026 KTM 125 SX
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    Technical Specifications

    2026 KTM 125 SX

    Engine

    Design
    1-cylinder, 2-stroke engine
    Displacement
    124.8 cm³
    Transmission
    6-speed
    Fuel-mixture generation
    Keihin EFI, throttle body 39 mm
    EMS
    Vitesco Technologies EMS
    Clutch primary drive teeth
    73
    Primary drive
    23:73
    Clutch
    Wet multi-disc DS clutch, Brembo hydraulics
    Clutch type
    DS multi-disc wet clutch
    Clutch operation
    Brembo hydraulics
    Engine cylinder
    Single cylinder
    Engine stroke
    2-Stroke

    Chassis

    Frame design
    Central double-cradle-type 25CrMo4 steel
    Front brake
    Disc brake
    Rear brake
    Disc brake
    Rear subframe design
    Aluminum-reinforced polyamide
    Chain
    520, Non-sealed

    Suspension

    Front suspension
    WP XACT-USD (AER), Ø 48 mm
    Rear suspension
    WP XACT Monoshock with linkage
    Suspension travel (front)
    310 mm
    Suspension travel (rear)
    300 mm
    Front suspension adjustment
    Compression (high and low speed), rebound
    Rear suspension setting
    Compression and rebound adjustable

    Dimensions

    Seat height
    958 mm
    Ground clearance
    359 mm
    Tank capacity (approx.)
    7.2 l