KTM 390 Duke R vs KTM 50 SX

Choosing between the KTM 390 Duke R vs KTM 50 SX? BikeJunction is here to help! The 390 Duke R starts at ₹ 3.45 Lakh, while the 50 SX is priced at ₹ 4.75 Lakh (ex-showroom). You can easily compare all the required parameters for your new two-wheeler. These two-wheelers have powerful motors with good performance. Among them, the 390 Duke R offers 39 Nm @ 6500 rpm torque. The 50 SX gives 5.2 Nm @ 7500 rpm torque. Apart from all this, you can pick from 3 colour options for the 390 Duke R and 1 for the 50 SX. you will get a more extensive comparison of KTM 390 Duke R and KTM 50 SX, which will definitely clear your confusion between these two-wheelers.

KTM 390 Duke R vs KTM 50 SX Comparison Overview

Key Highlights	390 Duke R	50 SX
Price	₹ 3.45 Lakh	₹ 4.75 Lakh
Displacement	398.63 CC	499 CC
Power	45.3707 bhp @ 8500 rpm	5.3 bhp @ 11500 rpm
Mileage	29 KMPL	29 KMPL
Top Speed	167 kmph	_

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Engine

Max Power Highest power the engine/motor can produce.	45.3707 bhp @ 8500 rpm	5.3 bhp @ 11500 rpm
Max Torque The highest twisting force the engine generates, which affects acceleration and pulling power.	39 Nm @ 6500 rpm	5.2 Nm @ 7500 rpm
Compression Ratio Compression ratio is how much the engine squeezes air-fuel before ignition. Higher ratios mean more power; lower ratios improve durability.	12.71:1	N/A
Cooling System Method used to prevent engine overheating.	Liquid Cooled	Liquid cooling
Emission Type Pollution level compliance of the engine.	BS6 Phase 2B	BS6 Phase 2
Engine Type Design and working of the two-wheeler's engine.	Single Cylinder Liquid Cooled, DOHC, FI Engine	Single cylinder, 2-stroke
Displacement Engine cylinder capacity measured in cc.	398.63	49.9
Bore Bore is the diameter of a bike’s engine cylinder. A larger bore allows more fuel-air mix, increasing power and speed.	89 mm	39.5 mm
Range The maximum distance an electric two-wheeler can travel on a full charge.	435 Km	N/A
Stroke Stroke is the piston’s movement inside the engine cylinder. Longer strokes give more torque, shorter strokes give more speed and higher RPM.	64 mm	40.7 mm

Speed

Top Speed

167 Km/h

N/A

Tyres & Wheels

Tyre Size	Front - 110/70 - ZR17, Rear - 150/60 - ZR17	Front : 60/100 x 12, Rear : 2.75 x 10
Wheel Size	Front - 17 inch, Rear - 17 inch	Front : 12 inch, Rear : 10 inch
Wheels Type	Alloy	N/A
Tubeless Tyre A tyre without an inner tube, reducing puncture risks and maintaining air longer.	Tubeless	N/A
Wheelbase The distance from the center of the front wheel to the center of the rear wheel, affecting stability, handling, and riding comfort.	N/A	1026 mm

Brakes

Abs (Anti-locking Braking System) Prevents wheel locking during hard braking, improving control and safety.	N/A	null
Front Brake Diameter	320 mm	160 mm
Rear Brake Diameter	240 mm	10 mm

Fuel

Fuel Capacity

15 L

2.3 L

Body

Frame The main structure holding the bike together.	Split-Trellis frame	Central double-cradle-type frame
Ground Clearance Distance between the bike’s lowest part and the ground.	183 mm	233 mm
Kerb Weight Bike’s weight with fuel and fluids.	168.3 Kg	45 Kg
Seat Height Distance from the ground to the seat.	N/A	653 mm

Electrical Accessories

Mobile Connectivity A feature to connect your phone to the two-wheeler's system.	Yes	N/A
Bluetooth Connectivity Wireless connection for calls, music, and navigation.	Yes	N/A

Switches & Controls

Riding Modes Different settings (e.g., Sport, Eco, Rain) that adjust performance and power delivery.	Street, Rain and Track	N/A
Starting The method to start the bike (e.g., electric start, kick start, or both).	Self Start	Kick Start
Engine Kill Switch A button to instantly turn off the engine for safety and convenience.	Yes	N/A
Traction Control A system that prevents wheel slip by adjusting power during acceleration on slippery surfaces.	Yes	N/A

Meter

Display A screen that shows important riding information like speed, fuel, and trip details.	TFT	N/A
Fuel Gauge Indicates the current fuel level in the tank.	Digital	N/A
Odometer Measures and records the total distance the bike has traveled since new.	Digital	N/A
Speedometer Displays the current speed of the bike in km/h or mph.	Digital	N/A
Techometer	Digital	N/A
Clock	Yes	N/A
Distance To Empty Indicator Estimates how far you can ride before the fuel runs out.	No	N/A
Low Battery Indicator Warns when the battery charge is low and may need recharging or replacement.	Yes	N/A
Low Oil Indicator Alerts when engine oil is low, preventing damage and ensuring smooth performance.	Yes	N/A

Clutch & Gear

Clutch

A device that connects and disconnects the engine from the wheels for smooth gear shifts.

Assist And Slipper Clutch

N/A

Lights

Head Light	LED	N/A
Tail Light	LED	N/A
Drls	Yes	N/A
Turn Signal Lamp Flashing lights on a two-wheeler that indicate the rider's turning or lane-changing direction.	LED	N/A
Led Tail Light Energy-efficient, bright rear light.	Yes	N/A
Low Fuel Indicator A warning light when fuel is low.	Yes	N/A

Shockers

Suspension Front	5-click Compression & Rebound adjustable, Open Cartridge, WP APEX USD forks, 43mm diameter	XACT 35 WP Upside-Down fork, Ø 35 mm
Suspension Rear	Adjustable WP APEX Monoshock, 5-step Rebound damping, 10-step preload adjustable	XACT WP mono shock

Others

Additional Features	Track Screen, Ride-by-wire	N/A
Call Sms Alerts Notifies you of incoming calls or messages on the bike’s screen.	Yes	N/A
Geo Fencing Alerts you if the bike moves beyond a set location boundary.	No	N/A