125 SX 2018

The whip cracking KTM 125 SX has been at the front for years. With phenomenal performance on tap, it will be there for many more seasons to come. A compact chassis and the lowest weight out there is teamed up with a high performance 125cc 2-stroke engine for a surefire trophy collection. Get shredding, youngsters.

FEATURES INCLUDE

2-stroke power, extremely compact and ultra-light at a mere 17.2kg.
Compact cylinder with a 54mm bore.
High crankshaft position located close to the centre of gravity.
New MIKUNI TMX carburetor.
Meticulously tuned expansion chamber for maximum torque.
Robust 6-speed transmission, with 'no dirt' lever.
87.2kg, the lightest bikes in the competition.
No tools airbox, replace in seconds.
High-tech, lightweight chrome-moly steel frame.
Cast aluminum swingarm.
Durable seat offers great comfort.
Lightweight polyethylene tank with a capacity of 7 litres.
Aluminum radiators made by WP.
CNC machined hubs and high-end Excel rims.
Dunlop Geomax MX 3S tyres.
Handlebars, tapered, made of high-strength aluminum by NEKEN with ODI lock-on grips.
'No dirt' footpegs.
WP AER 48 front fork, a 48mm USD air-sprung fork.
WP monoshock.
CNC machined triple clamps.
High-tech Brembo babies are combined with lightweight wave discs made by Galfer
Kiska Design shaped plastics.



SPECIFICATION

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