The KTM 450 SX motorcycle specifications include a 449.4 cc (27.42 cu in) engine, a 4-speed gearbox, and a listed weight of 105.2 kg (231.9 lb).
Key specifications
2006, 2009, 2012Model years
449 ccDisplacement
105.2 kgDry weight
925 mmSeat height
7 LFuel tank
1,481 mmWheelbase
380 mmGround clearance
Model years covered
200620092012
Year-specific specification changes
The 2006 model is treated as the standard specification. Only later model years with a different supplied value are shown below.
Bore × stroke
2009201297.0 x 60.8 mm (3.8 x 2.4 inches)
Displacement
2009449 cc (27.40 cu in)
2012510.4 cc (31.14 cu in)
Dry weight
20092012165 kg (363.8 lb)
Frame
2009Chromoly
2012Chromoly (25 CrMo4). Subframe: Aluminum.
Front brakes
2012Single disc. Floating Wave discs, 4-piston fixed caliper
Front suspension
2009WP fully adjustable, twin A-arms
2012Ohlins fully adjustable, Twin Chromoly A-arms
Fuel system
2009Carburettor. Keihin FCR-MX 41
Rear brakes
2012Single disc. Single piston floating caliper
Rear suspension
2009WP PDS mono-shock, fully adjustable, swingarm
2012Ohlins PDS Mono-shock, Fully Adjustable, Chromoly Swingarm
Wheelbase
200920121,280 mm (50.4 inches)
Exhaust system
2009Aluminum SX Racing w / Spark Arrestor
Front wheel travel
20092012244 mm (9.6 inches)
Fuel capacity
2009201210.30 L (2.72 US gal)
Fuel control
2009Double Overhead Cams/Twin Cam (DOHC)
2012Single Overhead Cams (SOHC)
Ground clearance
20092012265 mm (10.4 inches)
Ignition
2009Kokusan digital
2012Kokusan digital 4K-3B
Lubrication
2009Dry sump, pressure lubrication with 2 Eaton pumps
Rear wheel travel
20092012258 mm (10.2 inches)
Seat height
20092012795 mm (31.3 inches)
How the KTM 450 SX compares
This compares the motorcycle with all KTM models in this specifications database. The blue marker is this model and the grey line is the KTM database average.
Displacement449 cc
Low 49 ccAverage 444 ccHigh 1,301 cc
Very close to the KTM database average. Around the 63rd percentile across KTM models.
Seat height925 mm
Low 607 mmAverage 895 mmHigh 992 mm
Very close to the KTM database average. Around the 57th percentile across KTM models.
Fuel capacity7 L
Low 2 LAverage 10.6 LHigh 23 L
About 34% smaller than the KTM database average. Around the 17th percentile across KTM models.
This model KTM database average
Mechanical overview
Engine layout snapshot
Single cylinder, four-stroke • 449 cc • Liquid cooled
Chassis snapshot
Wheelbase 1,481 mmSeat 925 mmClearance 380 mm
4-speed • 80/100-21 front / 110/90-19 rear
Additional useful specifications
| Front tire size |
80/100-21 |
| Rear tire size |
110/90-19 |
| Front tire width |
80 mm |
| Front tire aspect ratio |
100% |
| Front rim diameter |
21 in |
| Rear tire width |
110 mm |
| Rear tire aspect ratio |
90% |
| Rear rim diameter |
19 in |
| Bore/stroke ratio |
1.50:1 (Oversquare) |
Engine specifications
| Engine type |
Single cylinder, four-stroke |
| Displacement |
449.4 cc (27.42 cu in) |
| Bore × stroke |
95.0 x 63.4 mm (3.7 x 2.5 inches) |
| Compression ratio |
12.0:1 |
| Valves per cylinder |
4 |
| Cooling system |
Liquid |
| Fuel system |
Carburettor. Keihin MX FCR 41 |
| Fuel control |
Overhead Cams (OHC) |
| Ignition |
Kokusan digital 4K-3A |
| Starter |
Kick |
| Lubrication |
Pressure lubrication with 2 Eaton pumps |
Transmission and drivetrain
| Gearbox |
4-speed |
| Clutch |
Wet multi-disc clutch, operated hydraulically |
Chassis and suspension
| Frame |
Central double-cradle-type 25 CrMo4 |
| Front suspension |
WP-USD 48 mm (1.89 inches) |
| Rear suspension |
WP-PDS shock absorber |
| Front wheel travel |
300 mm (11.8 inches) |
| Rear wheel travel |
335 mm (13.2 inches) |
| Rake |
26.5° |
| Trail |
112 mm (4.4 inches) |
Brakes, wheels and tires
| Front brakes |
Single disc |
| Rear brakes |
Single disc |
| Front tire |
80/100-21 |
| Rear tire |
110/90-19 |
Dimensions and weight
| Dry weight |
105.2 kg (231.9 lb) |
| Seat height |
925 mm (36.4 inches) |
| Overall width |
450 mm (17.7 inches) |
| Wheelbase |
1,481 mm (58.3 inches) |
| Ground clearance |
380 mm (15.0 inches) |
Fuel and emissions
| Fuel capacity |
7.00 L (1.85 US gal) |
Disclaimer: Specifications may vary by market, trim, production date and optional equipment, and scraped or historical data can contain errors. Comparison and percentile values are calculated from KTM models in this specifications database. Always double-check important specifications against the motorcycle owner’s/service manual and official KTM information before relying on them. Visit the official KTM website.