KTM
| Torque | 37 Nm / 27.3 lb-ft |
| Transmission | 6-speed |
| Cooling | Liquid cooled |
| Power in KW | 32 kW / 42.9 hp |
| Starter | Electric starter |
| Stroke | 60 mm / 2.36 " |
| Bore | 89 mm / 3.5 " |
| Clutch | PASC™ antihopping clutch, mechanically operated |
| CO2 emissions | 81 g/km |
| Displacement | 373 cm³ / 22.8 in³ |
| EMS | Bosch EMS with RBW |
| Design | 1-cylinder, 4-stroke engine |
| Fuel consumption | 3.46 l/100 km / 0.91 gal/100 miles |
| Fuel-mixture generation | Bosch EFI (throttle valve 46 mm / 1.81 ") |
| Lubrication | Wet sump |
| Weight (without fuel) | 158 kg / 348.3 lbs |
| Wet weight | ~ 171.7 kg / 379 lbs |
| Tank capacity (approx.) | 13.7 l / 3.62 gal |
| Wheelbase | 1343 mm / 52.87 " |
| ABS | Bosch 9.1MP Two Channel ABS (Supermoto ABS) |
| Front brake disc diameter | 320 mm / 12.6 " |
| Rear brake disc diameter | 230 mm / 9.06 " |
| Front brake | Four-piston radial fixed calliper, brake disc |
| Rear brake | Single-piston floating calliper, brake disc |
| Chain | 520 X-Ring |
| Frame design | Steel trellis frame, powder coated |
| Front suspension | WP APEX 43 |
| Ground clearance | 158 mm / 6.22 " |
| Handlebar | Steel clip on handlebars |
| Rear suspension | WP APEX - Monoshock |
| Seat height | 824 mm / 32.44 " |
| Silencer | Stainless steel primary and aluminium secondary silencer |
| Steering head angle | 66.5 ° |
| Rear subframe design | Steel trellis frame, powder coated |
| Suspension travel (front) | 120 mm / 4.72 " |
| Suspension travel (rear) | 150 mm / 5.91 " |
| Wheels | Cast aluminium wheels |
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KTM’s small-bore supersport keeps the focus on lightweight thrills, sharp handling, and everyday usability. If you want a lively single-cylinder sportbike that’s as happy commuting as it is ripping backroads, the 2024 KTM RC390 specs deliver a compelling package. This KTM RC390 review breaks down the numbers and how they feel on the road.
The RC390’s 373 cm³ single is the heart of its playful character. With 32 kW (42.9 hp) and 37 Nm, it’s eager off the line and responsive in the midrange—perfect for slicing through city traffic and blasting between corners. Bosch EFI with a 46 mm throttle valve and Bosch EMS with RBW (ride-by-wire) ensure precise fueling and crisp throttle response, while the liquid-cooled design keeps performance consistent lap after lap.
A 6-speed transmission paired with a PASC antihopping (slipper) clutch adds confidence when downshifting aggressively and smooths out hard corner entries. Fuel efficiency is a strong suit at 3.46 l/100 km (0.91 gal/100 miles), and CO2 emissions are listed at 81 g/km—useful if you care about running costs and a lighter footprint. Electric start convenience is standard, and the 520 X-Ring chain keeps drive reliable and low maintenance for daily use.
Chassis feel is a highlight. The steel trellis frame and steel trellis rear subframe are light yet rigid, feeding communicative feedback through the WP APEX 43 front end and WP APEX rear monoshock. Suspension travel is 120 mm up front and 150 mm at the rear—enough compliance for rougher urban streets while staying taut for sporty rides. A wheelbase of 1343 mm (52.87 in), a steering head angle of 66.5°, and ground clearance of 158 mm (6.22 in) give the RC390 a quick-turning yet stable nature.
The KTM RC390 seat height is 824 mm (32.44 in). Combined with the KTM RC390 weight of ~171.7 kg (379 lbs) wet, lower-speed maneuvering is friendly, making U-turns and tight parking a breeze. Steel clip-on handlebars set a sporty posture without going extreme; shorter riders should find it approachable, while taller riders still get enough room to move around on spirited rides.
Braking is a standout: a four-piston radial fixed caliper clamps a 320 mm front disc, while a single-piston floating caliper bites a 230 mm rear disc. Bosch 9.1MP Two Channel ABS (Supermoto ABS) adds security in the wet and lets you dial up fun by allowing controlled rear-wheel slide in Supermoto mode.
Other useful touches include:
Cooling is liquid, the starter is electric, and the 6-speed box works with the PASC antihopping clutch to keep the RC390 composed under hard riding.
If you’re cross-shopping lightweight sportbikes, the 2024 KTM RC390 specs hit a sweet spot of performance and accessibility.
The RC390 brings big-bike features to the lightweight class: a trellis frame, WP APEX suspension, strong braking hardware, and sophisticated electronics like Bosch 9.1MP ABS and RBW. Its single-cylinder punch, 6-speed gearbox, and slipper clutch make it a willing partner for both daily duty and spirited rides.
Downsides? The clip-on ergonomics lean sporty, which some commuters may find less relaxed. But as an all-rounder that prioritizes fun, control, and value, this KTM RC390 review finds it one of the most engaging choices in its segment.
Is the 2024 KTM RC390 good for beginners? Yes. With ~171.7 kg (379 lbs) wet weight, 824 mm seat height, Bosch 9.1MP ABS, and a predictable 37 Nm torque delivery, it’s approachable and confidence-inspiring.
What is the seat height of the 2024 KTM RC390? The KTM RC390 seat height is 824 mm (32.44 in).
How heavy is the 2024 KTM RC390? The KTM RC390 weight is approximately 171.7 kg (379 lbs) wet; weight without fuel is 158 kg (348.3 lbs).
How much power does the 2024 KTM RC390 make? It produces 32 kW (42.9 hp) and 37 Nm (27.3 lb-ft).
Does the 2024 KTM RC390 have ABS and a slipper clutch? Yes. It features Bosch 9.1MP Two Channel ABS (Supermoto ABS) and a PASC antihopping (slipper) clutch.