| Attribute | Value |
| General |
| Production from | 2012 year |
| Make | KTM |
| Model | KTM 450 SX |
| Category | ATV |
| Engine and transmission |
| Engine type | Single cylinder, four-stroke |
| Valves per cylinder | 4 |
| Fuel system | Carburettor. Keihin MX FCR 41 |
| Engine details | Cam levers, drive via helical gear pair and tooth-wheel chain |
| Displacement | 510.4 cm³ |
| Power | Add |
| Max RPM | Add |
| Fuel consumption | Add |
| Cooling system | Liquid |
| Transmission type,final drive | Chain |
| Torque | Add |
| Bore | 97 mm |
| Stroke | 60.8 mm |
| Gearbox | 5-speed |
| Greenhouse gases | Add |
| Fuel control | Single Overhead Cams (SOHC) |
| Emission details | Add |
| Driveline | 14:38 |
| Ignition | Kokusan digital 4K-3B |
| Clutch | Wet multi-disc clutch, operated hydraulically |
| Lubrication system | Pressure lubrication with 2 Eaton pumps |
| Compression | 11.0:1 |
| Exhaust system | Add |
| Chassis |
| Front suspension | Ohlins fully adjustable, Twin Chromoly A-arms |
| Rear suspension | Ohlins PDS Mono-shock, Fully Adjustable, Chromoly Swingarm |
| Front brakes | Single disc. Floating Wave discs, 4-piston fixed caliper |
| Rear brakes | Single disc. Single piston floating caliper |
| Diameter | 200 mm |
| Frame type | Chromoly (25 CrMo4). Subframe: Aluminum. |
| Front tyre | 20/7-10 |
| Rear tyre | 20/11-9 |
| Seat | Add |
| Wheels | Add |
| Front wheel travel | 244 mm |
| Rear wheel travel | 258 mm |
| Trail | Add |
| Rake (fork angle) | Add |
| Other |
| Battery capacity | Add |
| Starter | Electric |
| Color options | |
| Carrying capacity | Add |
| Light | Add |
| Instruments | Add |
| Electrical Voltage | Add |
| Dimensions |
| Wheelbase | 1,280 mm |
| Kerb weight | Add |
| Dry weight | 165 kg |
| Power/weight ratio | Add |
| Overall height | Add |
| Overall length | Add |
| Overall width | Add |
| Seat height | 795 mm |
| Alternate seat height | Add |
| Ground clearance | 265 mm |
| Front percentage of weight | Add |
| Rear percentage of weight | Add |
| Performance |
| Top speed | Add |
| Acceleration 0-100 km/h | Add |
| Length | Add |
| Reserve fuel capacity | Add |
| Fuel capacity | 10.3 l |
| Oil capacity | Add |
| Width | Add |
| Height | Add |