When you see the 2025 KTM 450 SX-F roll off the trailer, you know it means business. With 5 AMA 450 Supercross titles in the last 7 seasons, the 2025 KTM 450 SX-F rolls up to the starting gate already armed with the learnings of past championships – only this time, it’s freshly loaded with an all-new arsenal of weaponry.
Key Specifications
| Engine Type | 1-cylinder, 4-stroke engine |
| Engine Capacity | 449.9 cc |
| Max Power | n/a |
| Max Torque | n/a |
| Top Speed | n/a |
| Fuel Tank Capacity | 7.2 L / 1.9 US gallons 8.5 L / 2.24 US gallons (US variant) |
| Weight (Wet/Kerb) | ~ 112 kg / 246.91 lbs |
| Seat Height | 958 mm / 38.77 inches |
*n/a – information not provided by manufacturer
All Specifications
Make & Model
| Model | KTM 450 SX-F |
| Year | 2025 |
Engine
| Engine Type | 1-cylinder, 4-stroke engine |
| Displacement | 449.9 cc |
| Bore x Stroke | 95 x 63.4 mm |
| Number of Cylinders | 1 |
| Max Horsepower | n/a |
| Max Torque | n/a |
| Valves per Cylinder | 4 |
| Engine Management System | Keihin EMS |
| Fuel-mixture System | Keihin EFI, throttle body 44 mm |
| Ignition System | Contactless controlled fully electronic ignition with digital ignition system |
| Fuel | Super Unleaded (ROZ 95) |
Performance
| Top Speed | n/a |
| Acceleration (0-100 km/h, 0-60 mph) | n/a |
*n/a – information not provided by manufacturer
Transmission
| Clutch | Multidisc clutch in oil bath, hydraulically activated |
| Gearbox | 5 speed transmission, claw shift |
| Primary Drive Ratio | 26:72 |
| Gear Ratios | 1st gear -14:28 2nd gear – 16:26 3rd gear – 18:24 4th gear – 21:24 5th gear – 22:21 |
| Final Drive | Chain (520 X-Ring) |
| Quick Shifter | Yes (Upshift QuickShifter) |
| Traction Control System | Yes |
Electrical & Electronics System
| Battery | 12 V, HJTZ5S-FP-C, Lithium Ion |
| Alternator/Generator | 14v, 200W |
| Starter | Electric starter |
| Headlight Type | LED |
| Taillight Type | LED |
| Riding Modes | 2 Maps (Map 1 & 2) |
| Traction Control System | Yes |
| Launch Control | Yes |
Chassis & Suspension
| Frame Type | Central double-cradle-type 25CrMo4 steel |
| Front Suspension | WP XACT-USD (AER), Ø 48 mm |
| Front Suspension Travel | 300 mm / 11.8 inches |
| Rear Suspension | WP XACT Monoshock with linkage |
| Rear Suspension Travel | 310 mm / 12.2 inches |
| Rear Subframe | Aluminum-reinforced polyamide |
Wheels & Brakes
| Wheels | D.I.D Alloy rims, Orange CNC machined hubs, Black spokes, Orange aluminum nipples |
| Front Tire Size | 80/100 -21 51M TT |
| Rear Tire Size | 110/90 – 19 62 M S TT (EU/US) 110/90 – 19 63 M S TT (BR) |
| Front Brakes | Disc brake 260 mm |
| Rear Brakes | Disc brake 220 mm |
Dimension & Weights
| Seat Height | 958 mm / 38.77 inches |
| Wheelbase | 1493 mm / 58.77 inches |
| Ground Clearance | 343 mm / 13.5 inches |
| Fuel Tank Capacity | 7.2 L / 1.9 US gallons 8.5 L / 2.24 US gallons (US variant) |
| Wet (kerb/curb) Weight | ~ 112 kg / 246.91 lbs |
| Dry Weight | ~ 102.6 kg / 226.19 lbs |
