The KTM 125
SX is the most compact and lightweight of the full-size bikes and
delivers a confidence-inspiring ride like no other. A lightweight
chassis teams up with the most competitive 125 cc 2-stroke engine
in its class, delivering superior agility and power to fulfil the
demands of any young adrenaline seeker. This 2-stroke screamer is
the ultimate entry point into the pro ranks and a sure-fire way to
add to the trophy collection.
2020 KTM 125 SX Highlights
NEW graphics for a READY TO RACE appearance.
NEW WP XACT front fork setting for improved damping, and new
fork piston for improved performance. Features proven,
sophisticated air spring design and separate damping functions.
NEW WP XACT rear shock setting and new compression adjuster for
NEW front sprocket fixation uses screw and diaphragm spring
instead of circlip.
Reworked reeds for intake block offer improved function for
better sealing and performance.
Reworked kickstart intermediate gear for improved durability.
High-tech, lightweight chrome-moly steel frame with optimized
stiffness provides a great blend of comfort and stability.
Single-piece cast aluminum swingarm features a long rear axle
slot for increased adjustability, offering better straight-line
Lightweight die-cast engine cases feature a high crankshaft
position located close to the center of gravity for optimal mass
38 mm flat slide carburetor provides smooth and controllable
power delivery and guarantees optimal performance over the entire
Bodywork features a slim design for optimal comfort, control
and freedom of movement.
Air box and air boot designed to provide maximum protection of
the air filter against soiling and better airflow for optimal
performance. Air filter can be accessed without tools for quick
Hydraulic Brembo clutch system offers light operation and
highly controllable modulation of the clutch.
High-tech Brembo brakes have always been standard equipment on
KTM offroad bikes and are combined with lightweight Wave discs.
Handlebar clamps feature a separated lower clamp and
bridge-type upper clamp for more torsional stiffness.
KTM's "No Dirt" foot peg design keeps the peg pivot from
becoming clogged, ensuring the foot peg is always in the correct
Super lightweight Galfer Wave rotors, CNC machined hubs,
high-end Excel rims and Dunlop MX 3S tires.
"No Dirt" shift lever prevents dirt from fouling the lever
joint to ensure proper shifting in any condition.