KTM 125 SX 2023 User Manual

SERVICE WORK ON THE CHASSIS 11
53
F03764-10
– Position the fork legs.
Air bleeder screw
3
of the right fork leg is positioned to
the front.
Valve
A
of the left fork leg faces the front.
Info
Grooves are milled into the side of the upper end of the
fork legs. The second milled groove (from the top) must
be flush with the upper edge of the upper triple clamp.
The air suspension is located in the left fork leg. The
pressure and rebound damping is located in the right
fork leg.
S05334-10
–
Tighten screws
4
.
Guideline
Screw, bottom triple
clamp
M8 12 Nm (8.9 lbf ft)
S05335-10
–
Tighten screw
2
.
Guideline
Screw, top steering
head
M20x1.5 12 Nm (8.9 lbf ft)
S05335-11
–
Mount and tighten screw
5
.
Guideline
Screw, top
steering stem
M8 20 Nm (14.8 lbf ft)
Loctite
®
243™
S05334-11
– Using a plastic hammer, tap lightly on the upper triple clamp
to avoid stresses.
–
Tighten screws
6
.
Guideline
Screw, top triple
clamp
M8 17 Nm (12.5 lbf ft)
– Secure the wiring harness with cable holder on the left. Mount
and tighten screw
7
.

KTM 125 SX 2023 Specifications

General

Displacement	124.8 cm³
Bore x Stroke	54 mm x 54.5 mm
Starter	Electric starter
Transmission	6-speed
Front Suspension	WP XACT-USD, Ø 48 mm
Rear Suspension	WP XACT Monoshock with linkage
Front Brake	Disc brake
Rear Brake	Disc brake
Ground Clearance	375 mm
Seat Height	950 mm
Weight (without fuel)	87.5 kg
Cooling	Liquid cooled
Front Tire	80/100-21"
Rear Tire	100/90-19"
Front Brake Diameter	260 mm
Rear Brake Diameter	220 mm
Engine Type	Single-cylinder, 2-stroke
Frame	Central tube frame made of chrome molybdenum steel
Fuel Tank Capacity	7.2 liters