2021 KTM 125 SX Specs

motorcycle specs

These are the known mechanical and performance specifications for your 2021 KTM 125 SX.

Basic Specs

KTM 125 SX
Year2021
MakeKTM
ModelKTM 125 SX
CostUS$ 7399. MSRP depends on country, taxes, accessories, etc.

Engine

Displacement124.8 ccm (7.62 cubic inches)
Type
DetailsSingle cylinder, two-stroke
Max RPM
Compression
Bore/Stroke54.0 x 54.5 mm (2.1 x 2.1 inches)
Valves/Cylinder
FuelingInjection
IgnitionKokusan EMS
Exhaust
LubricationWet sump
CoolingLiquid

Drivetrain

Gearbox6-speed
Final Drive
ClutchMulti-plate clutch, Brembo hydraulics
Driveline5/8 - x - 1/4 (520) O Ring. Primary drive: 22:72.

Performance

Horespower15.0 HP (10.9 kW)
Torque
Top Speed

Fuel Economy & Polution

Fuel Consumption
Fuel Capacity7.50 litres (1.98 US gallons)
Emissions

Chassis

Frame TypeCentral double-cradle-type 25CrMo4 steel
Rake26.1 deg
Trail
Front SuspensionWP XACT-USD, Ø 48 mm
Front Travel310 mm (12.2 inches)
Rear SuspensionWP XACT Monoshock with linkage
Rear Travel300 mm (11.8 inches)
Seat
Seat Height850 mm (33.5 inches) If adjustable, lowest setting.
Alt. Seat Height
Total Height
Total Length
Total Width
Ground Clearance375 mm (14.8 inches)
Wheelbase
Dry Weight87.5 kg (192.9 pounds)
Wet Weight

Wheels & Brakes

Front Tire/Tyre110-17
Rear Tire/Tyre150-17
Front BrakesSingle disc
Front Brake Diameter260 mm (10.2 inches)
Rear BrakesSingle disc
Rear Brake Diameter220 mm (8.7 inches)
Wheels

Comments

It appears you're interested in specifications for the KTM 125 SX. This Enduro / offroad model is powered by a Single cylinder, two-stroke engine with 124.8 ccm (7.62 cubic inches) of actual displacement before compression. Fueling is metered via Injection allowing this machine to produce its 15.0 HP (10.9 kW) horsepower and torque. According to our records engine heat of the KTM 125 SX is moderated by Liquid. You'll need to get familiar with the 6-speed transmission and pay attention to final drive maintainence. Our best information shows that the front tire size is 110-17 and the rear is 150-17 . The entire package is supported by the frame, Central double-cradle-type 25CrMo4 steel. We know you like to go fast or cruise all day, but when you need to stop, you'll be dependant on Single disc front brakes and Single disc rear brakes. The KTM 125 SX was launched in 2021, and we're happy to know (or assume) you've got one in your garage. To help you keep your ride in tip-top shape, consider purchasing an owner or service manual.