Based on the 390 Duke platform, the new 2025 KTM 390 SMC R Supermoto model has KTM’s latest-gen LC4c single-cylinder 399cc engine with a claimed horsepower of 44.2. Price for the 2025 KTM 390 SMC R starts at $5499 and it is expected to be in dealers in early 2025.
Its powerplant is the LC4c engine, made its debut in the 2024 Duke.
The 399cc engine has 89 x 64mm bore and stroke dimensions, double-overhead cams, and a more compact cylinder head. Claimed horsepower is 44.2. The compression ratio remains the same at 12.6:1, while a 46mm throttle body and new injectors manage fuel delivery.
A revised airbox puts the engine higher in the chassis for improved ground clearance, and the updated six-speed transmission features slip and assist functions, with a quickshifter+ optional. Its 2.4-gallon fuel tank is metal instead of plastic. An all-new stainless-steel exhaust is mounted under the chassis and features a pair of catalyzers.
Selectable ride modes include Street and Sport setting, and the Motorcycle Traction Control can be turned off. A mode memory, new for 2025, allows the user to retain the selected mode when the key is turned off.
Front suspension consists of a 43mm WP Apex open-cartridge fork with adjustable compression and rebound damping. The rear suspension has an offset, direct-mount WP Apex shock that is fully adjustable for preload, rebound and compression damping. Both front and rear have 9 inches of travel. Michelin Power 6 tires are 110/70-17 (front) and 150/60-17 (rear) on wire-spoked wheels.
ByBre radial-mount four-piston caliper and 320mm disc brake is up front front, and single-piston caliper and a 240mm disc is at the rear. Bosch dual-channel ABS is standard and includes a trio of modes including Road, Supermoto, and Supermoto+ options.
The two-piece steel-trellis frame has revised subframe mounts for different rigidity and geometry. The steering head angle is optimized for control and stability on road and off, coming in a more relaxed 26.9 degrees compared.
A new 4.2-inch full-color TFT dash features an anti-glare coating and usesd the KTMconnect app for control of music, turn-by-turn navigation and incoming calls. New bar-mounted switches feature a four-way joystick for navigation and are illuminated for nighttime use. The headlights and taillights are all LED units.
The KTM 390 SMC R has improved service intervals with the first at 621 miles and then every 6200 after that. MSRP is listed at $5499 and the 2025 KTM 390 SMC R will begin arriving in showrooms in early 2025.
VIDEO | KTM 390 SMC R – Behave somewhere else | KTM
2025 KTM 390 SMC R Specifications
| MSRP | $5,499 |
| Engine | LC4c single-cylinder, DOHC, 4-stroke, liquid-cooled |
| Displacement | 398.7cc |
| Bore x Stroke | 89.0 x 64.0mm |
| Power | 44.2 hp at 8500 rpm |
| Torque | 28.8 lb-ft at 7000 rpm |
| Compression Ratio | 12.6:1 |
| Transmission/Final Drive | 6-speed/chain |
| Fuel System | Bosch EFI w/ 46mm throttle body; ride-by-wire |
| Engine Management | Bosch EMS with ride-by-wire |
| Clutch | PASC slipper clutch, mechanically operated |
| Frame | Steel trellis |
| Subframe | Bolt on steel trellis frame |
| Front Suspension | 43mm WP Apex, compression and rebound damping adjustable; 9.05 in. travel |
| Rear Suspension | WP Apex monoshock, fully adjustable; 9.05 in. travel |
| Front Brake | 4-piston radial-mount caliper, 320mm disc w/ ABS |
| Rear Brake | Single-piston floating caliper, 240mm disc w/ ABS |
| Front Wheel | Wire spoke, 17 x 2.00 in. |
| Rear Wheel | Wire spoke, 17 x 4.00 in. |
| Front Tire | Michelin Power 6 110/70-17 |
| Rear Tire | Michelin Power 6 150/60-17 |
| Rake/Trail | 26.9°/NA |
| Wheelbase | 57.2 in. |
| Ground Clearance | N/A |
| Seat Height | N/A |
| Fuel Capacity | 2.4 gal. |
| Wet Weight (w/o Fuel) | 339.5 lb |
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