KTM 790 Duke Specs, Top Speed & Performance Review
TL;DR
- The KTM 790 Duke is a 799cc naked middleweight producing a claimed 105 hp and 63.6 lb-ft of torque from its LC8c parallel-twin.
- Independent testing by MotoStatz (2021) recorded a 0-60 mph time of 3.07 seconds and a quarter-mile in 11.01 seconds at 124 mph.
- Top speed measures approximately 144.5 mph under ideal conditions; most riders see a realistic 135-140 mph with a full tuck (MotoStatz, 2021).
- The 2024 model starts at $9,499 MSRP in the US, down from $10,699 in 2020, after production shifted to CFMoto’s China facility (Cycle World, 2024).
- Standard electronics include cornering ABS with Supermoto mode, lean-sensitive traction control, and a five-axis IMU – features that were genuinely premium when the bike launched.
KTM 790 Duke Full Specifications
The 790 Duke runs the same core specification from its 2018 launch through the current 2024 model. The table below covers the full production spec.
| Specification | Detail |
|---|---|
| Engine | 799cc liquid-cooled parallel-twin (LC8c), DOHC, 4 valves/cyl |
| Bore x Stroke | 88mm x 65.7mm |
| Claimed Power | 105 hp @ 8,500 rpm |
| Rear-Wheel Power | ~95 hp @ 9,200 rpm (Cycle World dyno, 2019) |
| Claimed Torque | 63.6 lb-ft @ 8,000 rpm |
| Transmission | 6-speed with PASC slipper clutch |
| Frame | Chromoly steel trellis; die-cast aluminum subframe |
| Front Suspension | WP Apex 43mm inverted fork, non-adjustable, 5.5 in. travel |
| Rear Suspension | WP Apex monoshock, adjustable spring preload, 5.9 in. travel |
| Front Brakes | Dual 300mm discs, 4-piston radial calipers, cornering ABS |
| Rear Brake | Single 240mm disc, 1-piston caliper, cornering ABS |
| Tires | Maxxis Supermaxx ST: 120/70-17 front, 180/55-17 rear |
| Wheelbase | 58.1 in. (1,475mm) |
| Rake / Trail | 24.0° / 3.9 in. |
| Seat Height | 32.5 in. (825mm); optional low seat: 31.7 in. |
| Dry Weight | 372.5 lb (169 kg) |
| Wet Weight | 417 lb (189 kg) |
| Fuel Capacity | 3.7 gal (14L) |
| MSRP (2024, US) | $9,499 |
KTM 790 Duke Top Speed: What the Data Actually Shows
The KTM 790 Duke reaches a top speed of approximately 144.5 mph under ideal conditions, based on instrumented testing by MotoStatz (2021). That figure requires a sustained full-throttle run in sixth gear with a committed tuck. For most riders on public roads, a realistic top-end figure is closer to 135-140 mph before wind resistance turns the whole exercise into an arm workout (MotoStatz, 2021).
KTM does not publish an official top speed figure for the 790 Duke, so all data comes from independent testing.
The 799cc LC8c engine uses a 285-degree crankshaft offset, which gives it a firing interval that mimics a 75-degree V-twin. The result is a broader spread of usable power than a conventional parallel-twin, and that mid-range punch is what makes the 790 feel faster on the road than raw horsepower numbers suggest. Power stays strong from roughly 5,000 rpm all the way to the 9,500 rpm redline.
KTM 790 Duke 0-60 and Quarter-Mile Acceleration
The 790 Duke does 0-60 mph in 3.07 seconds with electronics disabled, and clears the quarter mile in 11.01 seconds at 124 mph (MotoStatz, 2021). It reaches 100 mph in 6.49 seconds.
Those numbers are genuinely impressive for a parallel-twin naked in this displacement class. The 11.01 quarter-mile time is a strong result, and MotoStatz notes the bike came close to breaking into the 10-second bracket under optimal conditions.
Getting there requires technique. The 790 wants to wheelie hard off the line, and its best times come with electronics off, precise clutch slip from the launch, and your weight pushed well forward over the bars. The power assist slipper clutch (PASC) helps, but the front wheel is always looking for an excuse. With traction control and wheelie control enabled in Street mode, times are more consistent but a few tenths slower.
KTM 790 Duke Acceleration Data Summary
| Benchmark | Time |
|---|---|
| 0-60 mph | 3.07 seconds |
| 0-100 km/h | 3.16 seconds |
| 0-100 mph | 6.49 seconds |
| Quarter mile | 11.01 sec @ 124 mph |
| 0-200 km/h | 10.99 seconds |
| Top speed | 144.5 mph |
Source: MotoStatz instrumented testing, 2021. Electronics disabled for best times.
The LC8c Engine: What Makes It Different From Other Parallel-Twins
The 790 Duke’s 799cc LC8c motor is KTM’s first parallel-twin engine. It runs a 285-degree crankshaft offset, which creates a firing order that sounds and feels more like a 75-degree V-twin than a conventional twin. At idle it has a lumpy, off-beat cadence. At full chat, it pulls hard and sounds like it means business.
Cycle World’s dyno measured 95.1 hp at 9,200 rpm and 58.2 lb-ft of torque at 7,800 rpm at the rear wheel (Cycle World, 2019). The gap between KTM’s claimed figures and the measured numbers is normal for this type of testing. That rear-wheel figure is still a strong output for a 799cc parallel-twin.
The engine uses 42mm Dell’Orto throttle bodies and ride-by-wire control. Bore and stroke are 88mm x 65.7mm, making it oversquare – meaning the wide bore and short stroke bias it toward high-rpm power rather than low-end grunt. That said, the 285-degree crank offset does give it more usable torque below 5,000 rpm than you’d expect from the spec sheet.
Oil changes are every 6,250 miles or annually per KTM’s maintenance schedule. The engine uses DLC (Diamond-Like Carbon) coated components on the valve train, which contributes to its compact, lightweight build.
Electronics Package: What You Get Standard vs. Optional
The 790 Duke ships with a proper electronics package. Four ride modes – Rain, Street, Sport, and Track – control throttle response, power output, and the aggressiveness of the safety systems. A five-axis IMU (inertial measurement unit) feeds lean angle data to both the traction control and ABS systems in real time (Cycle News, 2018).
Standard features:
- Ride-by-wire throttle
- Cornering Motorcycle Traction Control (MTC) with 9 adjustable levels
- Cornering ABS with Supermoto mode (rear ABS can be disabled for controlled rear slides)
- Motor Slip Regulation (MSR) – smooths engine braking to prevent rear chatter on aggressive downshifts
- 4-inch color TFT display with adaptive brightness
- Rain, Street, and Sport ride modes
Optional add-ons (2024 model):
- Quickshifter+ (up and down): $447
- Track mode pack: $378 – adds aggressive engine map, launch control, fully customizable traction control (0-9 levels), and the ability to disable wheelie control entirely
- Tech Pack (both above bundled): $819
- Cruise control and tire pressure monitoring also available separately
Track mode is the real-deal here. Nine levels of traction control intervention gives experienced riders enough range to dial in exactly how much rear-wheel slip they want. Launch control works as a clean, repeatable tool for drag strip launches rather than just a marketing checkbox.
Chassis, Handling, and Suspension
The 790 Duke weighs 372.5 lb dry. That’s light for a 100-horsepower twin, and the chromoly steel trellis frame keeps the chassis compact and stiff. A 24-degree rake angle and 3.9 inches of trail give it a steering geometry that’s quick and responsive without feeling nervous on the highway.
WP supplies both ends with their Apex-branded units. The 43mm inverted fork is non-adjustable on the compression and rebound, which is the only real frustration on the spec sheet. The rear monoshock offers spring preload adjustment. For the street, the factory setup is well balanced – there’s enough compliance for road imperfections while remaining taut when you lean into a corner.
The dual 300mm front discs with 4-piston radial calipers provide strong stopping power, and the cornering ABS does its job without intruding on normal riding. The Supermoto ABS mode is a legitimately useful option for riders who want to trail the rear brake into corners without the system intervening.
Maxxis Supermaxx ST tires are the stock rubber, chosen specifically for the 790 Duke. They’re a solid street compound, but riders spending regular time on a twisty canyon road might consider stepping up to a Michelin Power 5 or Pirelli Diablo Rosso IV for improved corner grip and longevity.
Real-World Performance and Riding Impression
The 790 Duke is at its best between 5,000 and 9,500 rpm. Below that, it’s cooperative and easy to manage in traffic – not lazy, but not trying to remove your arms from their sockets either. Crack the throttle above the 5,000 rpm mark and the LC8c pulls hard and consistently through to redline. There’s no sudden lurch in power delivery; it builds in a linear, confidence-inspiring way that makes the bike accessible to riders coming up from smaller displacement machines.
The seat height of 32.5 inches suits riders in the 5’10” to 6’2″ range best. Shorter riders can get the optional lower seat down to 31.7 inches (Rider Magazine, 2024). The riding position is forward-biased without going full sport crouch – wrists are slightly low, knees grip a slim tank. It’s comfortable for an hour of canyon riding; it gets tiring on long interstate miles.
The 3.7-gallon tank delivers around 150-160 miles of range at mixed-riding pace, depending on how often you’re above 7,000 rpm. At aggressive riding pace, expect something closer to 120-130 miles per fill.
Two real drawbacks worth naming: the front forks are non-adjustable (an irritation given the bike’s performance capability), and the 2019-2020 models had documented camshaft wear issues. KTM addressed the problem, but buyers looking at used first-generation 790s should confirm the fix has been performed.
KTM 790 Duke Price and Value
The 2024 KTM 790 Duke carries a US MSRP of $9,499 (Cycle World, 2024), down from $10,699 in 2020. The price reduction came when production shifted to CFMoto’s facility in China as part of KTM and CFMoto’s manufacturing partnership.
At $9,499 with cornering ABS, lean-sensitive traction control, a five-axis IMU, four ride modes, and launch control as standard, the value equation is hard to argue with. The optional Tech Pack at $819 adds the quickshifter and Track mode. A fully-specced 790 Duke with both options comes in under $11,000, which puts a significant electronics and performance package in reach for riders who’d otherwise stretch into more expensive naked-bike territory.
KTM 790 Duke Production History
The 790 Duke launched in 2018 as KTM’s first parallel-twin motorcycle. Production ran from 2018 through 2020, when KTM discontinued it in favor of the 890 Duke. KTM reintroduced the 790 Duke in 2023, now produced in partnership with CFMoto in China (Wikipedia, 2024). It currently sits between the 390 Duke and the 890 Duke in KTM’s naked lineup.
Frequently Asked Questions About the KTM 790 Duke
What is the top speed of the KTM 790 Duke?
Independent instrumented testing by MotoStatz (2021) recorded a top speed of 144.5 mph. A realistic figure for most riders with a full tuck is 135-140 mph. KTM does not publish an official top speed figure.
How fast is the KTM 790 Duke from 0 to 60?
The 790 Duke does 0-60 mph in 3.07 seconds with rider aids disabled, and completes the quarter mile in 11.01 seconds at 124 mph, per MotoStatz instrumented testing (2021). With traction control and wheelie control active in Street mode, times will be slightly slower but more consistent.
How much horsepower does the KTM 790 Duke make?
KTM claims 105 hp at 8,500 rpm for the US-market 790 Duke. Cycle World’s dyno measured 95.1 hp at the rear wheel (Cycle World, 2019). The gap between claimed and rear-wheel figures is standard, accounting for drivetrain losses.
What is the KTM 790 Duke’s engine displacement?
The 790 Duke uses a 799cc liquid-cooled parallel-twin engine, designated LC8c. Despite the model name, the displacement is 799cc, not 790cc. Bore and stroke are 88mm x 65.7mm.
How much does the KTM 790 Duke cost?
The 2024 KTM 790 Duke has a US MSRP of $9,499 (Cycle World, 2024). Optional additions include the Quickshifter+ at $447, Track mode at $378, and the bundled Tech Pack at $819.
Does the KTM 790 Duke have ABS?
Yes. The 790 Duke comes with cornering ABS as standard, informed by a five-axis IMU that accounts for lean angle during braking. It also includes a Supermoto mode that disables rear ABS for controlled rear-wheel slides.
Is the KTM 790 Duke good for beginners?
The 790 Duke is manageable in Rain and Street ride modes but is not recommended as a first motorcycle. With 105 hp in a 372-lb package, it demands respect. Riders with at least one smaller bike under their belt who want to step up to a serious naked will find the electronics suite genuinely helpful during the learning curve.
