Motocross Bikes
2006KTM 450 SX
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The 2006 KTM 450 SX is a high-performance four-stroke motocross bike designed for competitive riders and experienced enthusiasts. Known for its aggressive power delivery and lightweight chassis, it delivers impressive acceleration and handling that made it a formidable presence on professional and amateur circuits. The liquid-cooled engine and advanced ignition system ensure reliability during intense racing conditions.
- Capacity
- 449.4 ccm
- Engine
- Single
- Gearbox
- 4-speed
- Dry weight
- 105.2 kg
- Seat height
- 925 mm
- Power
- 44.9 HP (33.0 kW)
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built purely for motocross racing and aggressive off-road riding on tracks and rough terrain.
- Built for
- A raw, high-revving thumper with razor-sharp handling, long-travel suspension, and a hard-edged racing personality.
- Not ideal for
- Not suitable for commuting, touring, passengers, or riders wanting road comfort and low-maintenance convenience.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Will it fit you?
Worked out in your browser - nothing is sent to usEngine
- Capacity
- 449.4 ccm
- Power
- 44.9 HP (33.0 kW)
- Engine type
- Single
- Power/weight ratio
- 0.4268 HP/kg (dry)
- Bore x stroke
- 95.0 x 63.4 mm
- Compression
- 12.0:1
- Cooling system
- Liquid
- Fuel system
- Carburettor
- Starting
- Kick
- Ignition
- Kokusan digital 4K-3A
- Valves per cylinder
- 4
- Lubrication system
- Pressure lubrication with 2 Eaton pumps
Transmission
- Gearbox
- 4-speed
- Transmission type
- Manual
- Clutch
- Wet multi-disc clutch, operated hydraulically
Dimensions & weight
- Wheelbase
- 1481 mm
- Overall width
- 450 mm
- Seat height
- 925 mm
- Dry weight
- 105.2 kg
- Fuel capacity
- 7.00 litres
- Ground clearance
- 380 mm
Chassis & 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
- Rear wheel travel
- 335 mm
- Rake (fork angle)
- 26.5°
- Trail
- 112 mm
Brakes & wheels
- Front brakes
- Single disc
- Front brakes diameter
- 260 mm
- Rear brakes
- Single disc
- Rear brakes diameter
- 220 mm
- Front tyre
- 80/100-21
- Rear tyre
- 110/90-19
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
Rider Reviews
Common questions
What is the engine size of the KTM 450 SX?
The 2006 KTM 450 SX has a Capacity of 449.4 ccm (27.42 cubic inches).
What engine power does the KTM 450 SX have?
The 2006 KTM 450 SX has a Power of 44.9 HP (33.0 kW).
How many gears does the KTM 450 SX have?
The 2006 KTM 450 SX has a Gearbox of 4-speed.
How much does the KTM 450 SX weigh?
The 2006 KTM 450 SX has a Dry weight of 105.2 kg (231.9 pounds).
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