Aprilia SX 125 Supermoto 2021 vs. KTM 390 Duke 2019

Aprilia SX 125 Supermoto 2021

Aprilia SX 125 Supermoto 2021

KTM 390 Duke 2019

KTM 390 Duke 2019

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Technical Specifications Aprilia SX 125 Supermoto 2021 compared to KTM 390 Duke 2019

Aprilia SX 125 Supermoto 2021
KTM 390 Duke 2019

Engine and Drive Train

BoreBore54 mmBore89 mm
StrokeStroke54.5 mmStroke60 mm
Engine powerEngine power15 HPEngine power44 HP
Rpm at Max. PowerRpm at Max. Power8,250 rpmRpm at Max. Power9,500 rpm
TorqueTorque12.2 NmTorque35 Nm
Rpm at TorqueRpm at Torque8,000 rpmRpm at Torque7,250 rpm
Fuel systemFuel systemInjectionFuel systemInjection
StarterStarterKickStarterElectric
Clutch TypeClutch TypeMultiplate in oil-bathClutch TypeMultiplate in oil-bath
TransmissionTransmissionChainTransmissionChain
CylindersCylinders1Cylinders1
StrokesStrokes4-StrokeStrokes4-Stroke
CoolingCoolingliquidCoolingliquid
DisplacementDisplacement124 ccmDisplacement373.2 ccm

Suspension Front

Front suspensionFront suspensionUpside-Down telescopic forkFront suspensionUpside-Down telescopic fork

Brakes Front

TypeTypeSingle diskTypeSingle disk
DiameterDiameter300 mmDiameter320 mm
PistonPistonDouble pistonPistonFour pistons

Brakes Rear

TypeTypeDiscTypeDisc
DiameterDiameter218 mmDiameter230 mm
PistonPistonSingle pistonPistonSingle piston

Assistance Systems

Advanced Rider Assistance SystemsAdvanced Rider Assistance SystemsABSAdvanced Rider Assistance SystemsABS

Dimensions and Weights

Front tyre widthFront tyre width100 mmFront tyre width110 mm
Front tyre heightFront tyre height80 %Front tyre height70 %
Front tyre diameterFront tyre diameter17 inchFront tyre diameter17 inch
Rear tyre widthRear tyre width130 mmRear tyre width150 mm
Rear tyre heightRear tyre height70 %Rear tyre height60 %
Rear tyre diameterRear tyre diameter17 inchRear tyre diameter17 inch
WheelbaseWheelbase1,480 mmWheelbase1,367 mm
Seat HeightSeat Height870 mmSeat Height830 mm
Fuel Tank CapacityFuel Tank Capacity7.5 lFuel Tank Capacity13.4 l
License compliancyLicense compliancyA1License compliancyA2

Pros and Cons in comparison

Pros and Cons in comparison

Aprilia SX 125 Supermoto 2021

Aprilia SX 125 Supermoto 2021

Aprilia's SX 125 is a very sporty supermoto that does justice to Aprilia's long 125cc history. Its 15 hp single-cylinder inspires with its balanced character with high suitability for everyday use, but at the same time provides a lot of fun under the helmet. The biggest advantage it has over the competition is its ABS system, which only acts on the front wheel and was installed instead of a CBS system. This makes it possible to conjure up beautiful drifts on the asphalt, as befits a true supermoto.

pleasant engine characteristics

high-quality appearance

sporty chassis

ABS instead of CBS

weak brake

KTM 390 Duke 2019

KTM 390 Duke 2019

The KTM 390 Duke is a "real" Duke. The trademark: Extremely agile handling that makes for powerful riding fun. The flyweight 390 can be precisely controlled with its narrow waist and wide handlebars and feels most at home in tight corners. Especially with the Supermoto mode, it is a fun machine without equal. Unfortunately, only the brakes and suspension of the 390 cannot maintain the same, very high performance level as on the 125 Duke or 890 Duke. They feel a bit spongy and not optimally tuned, especially when the rider weighs in a bit more. The equipment is otherwise tip-top, especially when you consider the price of the 390 Duke. In terms of riding pleasure/euros, it outperforms most, including its Duke sisters.

Typical Duke ergonomics that are also suitable for taller riders

Extremely agile handling thanks to flyweight and narrow waist

Sporty engine with great handling

Modern TFT display with smartphone connectivity

Supermoto mode is a pleasure

Quickshifter (optional) works perfectly

Adjustable hand levers

Top price-performance ratio for A2 motorbike.

Chassis tuned a little too soft

pressure point of the brakes a little spongy

Price Comparison Avarage Market Price Aprilia SX 125 Supermoto vs KTM 390 Duke

Price Aprilia SX 125 Supermoto

Model year
Current average market prices

Price KTM 390 Duke

Model year
Current average market prices

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