2026 KTM Duke 390

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Overview

The KTM 390 Duke is a completely redesigned version of KTMs iconic lightweight naked bike. Built around a new 398 cc single-cylinder engine, it combines performance, precision handling, and advanced electronics giving riders a big-bike feel in a compact and manageable package.

Specifications

Engine & Drivetrain

• Engine type: Single-cylinder, 4-stroke, liquid-cooled

• Displacement: 398.7 cc

• Bore Stroke: 89 mm 64 mm

• Compression ratio: 12.6 : 1

• Transmission: 6-speed manual

• Final drive: 520 X-ring chain

• Power: Approximately 45 hp (33 kW)

• Torque: Approximately 39 Nm

• Clutch: Slipper clutch with assist function

• Ride-by-wire throttle

Chassis, Suspension & Brakes

• Frame: Steel trellis main frame with die-cast aluminum subframe

• Front suspension: WP Apex 43 mm open-cartridge fork, adjustable compression and rebound (150 mm travel)

• Rear suspension: WP Apex shock, rebound and preload adjustable (150 mm travel)

• Front brake: 320 mm disc, 4-piston radial caliper

• Rear brake: 240 mm disc, single-piston caliper

• Tires: Front 110/70-17, Rear 150/60-17

• ABS: Cornering ABS and Supermoto ABS modes

Dimensions & Capacities

• Seat height: 32.2 in (820 mm), optional low seat around 31.5 in (800 mm)

• Wheelbase: 53.4 in (1,357 mm)

• Ground clearance: 7.5 in (approx. 185 mm)

• Fuel capacity: 3.96 US gal (15 L)

• Curb weight: Around 364 lb (165 kg)

Electronics & Features

• Ride modes: Street, Rain, and Track

• 5-inch full-color TFT display with bonded glass

• Bluetooth connectivity and turn-by-turn navigation

• Launch control (in Track mode)

• Adjustable throttle response

• Quickshifter+ (up/down)

• LED headlight, DRL, and taillight

• Adjustable brake and clutch levers

Advertised pricing excludes applicable taxes title and licensing, dealer set up, destination, reconditioning and are subject to change without notice. Pricing may exclude any added parts, accessories or installation unless otherwise noted. Sale prices include all applicable offers and rebates. We make every effort to ensure the data listed is correct, Deland Motorsports assumes no responsibility for typos, misprint errors and/or omissions on listings. Please contact the dealer for the most accurate information.