125 SX 2017

Motocross

STING LIKE A BEE

The whip cracking KTM 125 SX has been buzzing at the front for years. If it is up to us, it stays there for many more seasons to come. A compact build and the lowest weight out there team up for the win with a glorious 2-stroke engine, fitted in a state-of-the-art chassis. Get shredding, youngsters.

ENGINE

  • DESIGN

    1-cylinder, 2-stroke engine

  • DISPLACEMENT

    124.8 cm³

  • BORE

    54 mm

  • STROKE

    54.5 mm

  • STARTER

    Kickstarter

  • TRANSMISSION

    6-speed

  • PRIMARY DRIVE

    23:73

  • SECONDARY GEAR RATIO

    13:50

  • CLUTCH

    wet multi-disc clutch, Brembo hydraulics

  • EMS

    Kokusan

CHASSIS

  • FRAME DESIGN

    25CrMo4 steel central-tube frame

  • FRONT SUSPENSION

    WP-USD, AER 48, Ø 48 mm

  • REAR SUSPENSION

    WP shock absorber with linkage

  • SUSPENSION TRAVEL (FRONT)

    310 mm

  • SUSPENSION TRAVEL (REAR)

    300 mm

  • FRONT BRAKE

    Disc brake

  • REAR BRAKE

    Disc brake

  • FRONT BRAKE DISC DIAMETER

    260 mm

  • REAR BRAKE DISC DIAMETER

    220 mm

  • CHAIN

    5/8 x 1/4"

  • STEERING HEAD ANGLE

    63.9 °

  • WHEELBASE

    1485 ± 10 mm

  • GROUND CLEARANCE

    375 mm

  • SEAT HEIGHT

    960 mm

  • TANK CAPACITY (APPROX.)

    7 l

  • WEIGHT READY TO RACE (WITHOUT FUEL)

    87.2 kg

  • MY17 125SX RHS
  • MY17 125SX LHS
  • MY17 125SX REARQTR
  • MY17 125SX RHSQTR
  • MY17 125SX RIDING1