The 2024 KTM 990 Duke has the larger engine and higher published torque, while the 790 Duke is lighter in the cited specifications. KTM’s Brazil-market 990 page lists 947 cm³, 123 PS and 103 Nm; its Ireland-market 790 page lists 799 cm³ and 87 Nm. Those figures come from different regional specification pages, so they are not a matched-market comparison.
2024 KTM 990 Duke vs. 790 Duke specifications
The figures below are KTM-published model-year specifications from Brazil for the 990 Duke and Ireland for the 790 Duke. KTM cautions that specifications can vary by country; use your local specification sheet for a purchase decision.
| Specification | 2024 KTM 990 Duke | 2024 KTM 790 Duke |
|---|---|---|
| Engine | 947 cm³ parallel twin (KTM Brasil) | 799 cm³ parallel twin (KTM Ireland) |
| Published output | 123 PS; 103 Nm (KTM Brasil) | 87 Nm; power is not stated in the cited Ireland technical specifications (KTM Ireland) |
| Gearbox | 6-speed (KTM Brasil) | 6-speed (KTM Ireland) |
| Seat height | 825 mm (KTM Brasil) | 825 mm (KTM Ireland) |
| Tank capacity | Approximately 14.8 L (KTM Brasil) | Approximately 14 L (KTM Ireland) |
| Weight without fuel | 179 kg (KTM Brasil) | 174 kg (KTM Ireland) |
| Engine oil listed | Motorex Power Synth SAE 10W-50 (KTM Brasil) | Motorex Power Synth SAE 10W-50 (KTM Ireland) |
Engine and weight: the clearest differences
990 Duke: larger displacement and higher listed torque
The Brazil-market 990 specification lists 947 cm³, 123 PS and 103 Nm, compared with 799 cm³ and 87 Nm on the Ireland-market 790 page. The cited 790 page does not state horsepower, so these sources do not establish a direct power comparison. Both are parallel twins and both pages list a six-speed gearbox.
790 Duke: 5 kg lighter on the stated basis
KTM lists the 990 at 179 kg and the 790 at 174 kg, both without fuel. That is a 5 kg difference between the published figures; it is not a wet- or curb-weight comparison. The listed tank capacities are approximate: 14.8 L for the 990 and 14 L for the 790.
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Chassis and electronics
990 Duke equipment described by KTM Brazil
KTM’s Brazil-market 990 feature page describes a new tubular frame, adjustable WP APEX suspension, ride modes, launch control and Supermoto ABS. These are manufacturer-described features, not evidence from a controlled comparison with the 790.
790 Duke ABS details on KTM’s Czech-market page
KTM’s Czech-market 790 page lists Bosch 9.1 MP ABS, including cornering ABS and Supermoto mode. Because this information comes from a different regional page than the Ireland-market technical specifications, check the equipment listed for the specific country and motorcycle you are considering.
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The cited sources do not establish which bike handles better, feels more comfortable or is safer in practice. Equipment descriptions alone cannot answer those riding questions.
Which 2024 Duke better fits your priorities?
- Choose the 990 for the stronger published engine figures: KTM Brazil lists more displacement and torque, along with 123 PS on its market-specific specification page.
- Consider the 790 if the listed weight matters most: KTM Ireland’s figure is 5 kg lower, measured without fuel.
- Fit and basic capacity do not separate them in these figures: both cited pages list an 825 mm seat height, while the approximate tank capacities differ by 0.8 L.
- Compare actual local equipment before deciding: KTM’s feature and technical pages describe different equipment details across regional markets, and the sources do not provide independent riding tests.
These specifications do not settle local price, availability, warranty, insurance, licensing or ownership costs. Ask a local KTM dealer for the current market-specific specification and commercial terms rather than inferring them from another country’s page.
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Check the manual and local specification before buying
KTM lists Motorex Power Synth SAE 10W-50 as the engine oil for both bikes on the cited technical pages. That is a manufacturer-listed specification, not a universal fitment instruction; verify the current owner’s manual and local requirements before buying oil or servicing the motorcycle. KTM’s Manuals & Maintenance page provides access to owner’s manual lookup and explains print-on-demand manual availability.
For a fair comparison, confirm that both local-market spec sheets use the same weight definition, include the same equipment and refer to the same model year. KTM notes that specifications may vary by country, and its support information also cautions that images can depict optional equipment: KTM support FAQ.
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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
