2024 KTM 390 Duke Buyer’s Guide [Specs, Price]

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2024 KTM 390 Duke Buyer’s Guide [Specs, Price]

The 2024 KTM 390 Duke is a compact naked sportbike for new riders, returning riders, and those downsizing. KTM calls it 90% new, and the $5899 MSRP is unchanged from the previous model.

2024 KTM 390 Duke in orange, left side profile

The LC4c single grows from 373cc to 399cc through a longer 64mm stroke, keeping the 89mm bore. Peak power comes 1000 rpm sooner and peak torque 250 rpm sooner, so the midrange is easier to reach. A larger airbox and new exhaust support the change, and the engine spins up vigorously.

2024 KTM 390 Duke LC4c single-cylinder engine

The 6-speed transmission gets a new shift drum for improved engagement, and shifting is light. The clutch has assist-and-slipper functions. A quickshifter is a $247 option.

2024 KTM 390 Duke in Atlantic Blue, right side profile

A new steel-trellis frame works with an open-lattice aluminum swingarm and a cast aluminum subframe. Updated wheels cut nearly 10 pounds of unsprung mass, and the Duke tips into corners quickly. The offset shock makes room for the larger airbox and lowers the seat slightly, to about 32 inches.

2024 KTM 390 Duke parked in front of a brick building with rider seated behind it

Adjustable WP Apex suspension is a rarity at this level. The inverted fork offers five clicks of compression and rebound damping, and the shock is adjustable as well. New riders can learn setup on it.

2024 KTM 390 Duke WP Apex shock

A Bybre 4-piston caliper grips a 320mm front disc, and a 2-piston caliper handles the 240mm rear disc. Michelin Power 6 tires are standard. The two-channel cornering ABS has a Supermoto setting that disables the rear.

2024 KTM 390 Duke front wheel, disc, and caliper

Track, Sport, and Rain ride modes are selected through a five-inch TFT display. Adjustable traction control, launch control, and a pit-lane limiter are included, and the lighting is all LED.

2024 KTM 390 Duke handlebar and five-inch TFT display

The riding position is neutral, and the narrow single makes it easy to plant both boots at a stop. The compact cockpit suits shorter riders better than those pushing six feet, and the thin seat padding can tax riders on long days. Colors are Signature Electronic Orange and Atlantic Blue.

Read our 2024 KTM 390 Duke review.

2024 KTM 390 Duke Specifications

ENGINE

  • Type: Single cylinder
  • Displacement: 399cc
  • Bore x stroke: 89.0 x 64.0mm
  • Maximum power: 44 hp
  • Maximum torque: 29 lb-ft
  • Valvetrain: DOHC; 4 valves per cylinder
  • Fueling: Bosch EFI w/ 46mm throttle body
  • Lubrication: Wet sump
  • Transmission: 6-speed (quickshifter optional)
  • Clutch: Wet multiplate w/ assist-and-slipper functions
  • Final drive: Chain

CHASSIS

  • Frame: Powdercoated steel trellis w/ cast aluminum swingarm and removable cast aluminum subframe
  • Handlebar: Tapered aluminum
  • Front suspension; travel: Damping-adjustable WP Apex inverted 43mm open-cartridge fork; 5.9 inches
  • Rear suspension; travel: Cantilevered, linkage-less, rebound-damping adjustable WP Apex Separate Piston shock; 5.9 inches
  • Wheels: Cast aluminum
  • Front wheel: 17 x 3.00
  • Rear wheel: 17 x 4.00
  • Tires: Michelin Power 6
  • Front tire: 110/70-17
  • Rear tire: 150/60-17
  • Front brake: 320mm disc w/ radially mounted Bybre 4-piston caliper
  • Rear brake: 240mm disc w/ Bybre 2-piston caliper
  • ABS: Bosch 9.3 two-channel w/ Supermoto mode

DIMENSIONS and CAPACITIES

  • Wheelbase: 53.4 inches
  • Seat height: 32.2 inches
  • Fuel capacity: 3.9 gallons
  • Curb weight: 363 pounds
  • Colors: Signature Electronic Orange; Atlantic Blue

2024 KTM 390 Duke Price: $5899 MSRP

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