These are the known mechanical and performance specifications for your 2021 KTM 250 SX.
Basic Specs
Engine
Displacement249.0 ccm (15.19 cubic inches)
TypeReed intake
DetailsSingle cylinder, two-stroke
Max RPM
Compression
Bore/Stroke66.4 x 72.0 mm (2.6 x 2.8 inches)
Valves/Cylinder
FuelingCarburettor. Mikuni TMX.
IgnitionKokusan EMS.
Exhaust
Lubrication
CoolingLiquid
Drivetrain
Gearbox5-speed
Final Drive
ClutchWet, DDS multi-disc clutch, Brembo hydraulics
Driveline13:48. Primary drive: 26:72. 520 X-ring chain.
Fuel Economy & Polution
Fuel Consumption
Fuel Capacity7.50 litres (1.98 US gallons)
Emissions
Chassis
Frame TypeChrome-molybdenum steel central-tube
Rake26.5 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)
Wheelbase1495 mm (58.9 inches)
Dry Weight87.5 kg (192.9 pounds)
Wet Weight
Wheels & Brakes
Front Tire/Tyre80/100-21
Rear Tire/Tyre110/90-19
Front BrakesSingle disc
Front Brake Diameter260 mm (10.2 inches)
Rear BrakesSingle disc
Rear Brake Diameter220 mm (8.7 inches)
WheelsCNC machined hubs. Excel rims. Wire spoked. Dunlop Geomax MX 3S tires.
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