Enduro Bikes

2006KTM 400 EXC Racing

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The 2006 KTM 400 EXC Racing is a lightweight enduro machine built for competitive off-road riders seeking agile trail performance. Its potent 398cc single-cylinder engine delivers responsive power with excellent fuel efficiency, while the liquid-cooled design ensures reliability during demanding rides. Known for nimble handling and genuine dirt-bike credentials, it's ideal for experienced riders tackling both technical terrain and cross-country enduro events.

Capacity: 398.2 ccm
Engine: Single, four-stroke
Gearbox: 6-speed
Dry weight: 113.5 kg
Seat height: 925 mm
Power: 50.0 HP (36.8 kW)

⇄ Compare with another bike All model years

What’s new for the 2006 KTM 400 EXC Racing

vs the 2005

Spec	2005	2006
Front suspension	WP-USD 48 mm	WP-USD 48 mm (1.89 inches)

Other years 2000 2001 2002 2003 2004 2005 2006 2007

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail96%

Cornering60%

City riding15%

Daily riding15%

Touring20%

Two-up5%

Track20%

Best for: Built for competitive enduro and trail riding rather than road use, with a lightweight chassis and long-travel suspension designed to tackle rough, unpredictable ground.
Built for: Raw, focused, and purpose-built, this bike rewards aggressive, skillful riding with exceptional agility and off-road capability rather than outright speed or refinement.
Not ideal for: This is not a good fit for new riders, commuters, or anyone seeking comfort, passenger capability, or sustained highway touring.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

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Your height

Inseam (optional)

Units

At 925mm, a rider of 68.9" with a 31" (estimated) inseam will not reach the ground comfortably on the 2006 KTM 400 EXC Racing, with a cramped knee angle of around 80 degrees and an upright riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at over 900 mm — Sky High →

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Full specifications

Engine

Capacity: 398.2 ccm
Power: 50.0 HP (36.8 kW)
Engine type: Single, four-stroke
Power/weight ratio: 0.4405 HP/kg (dry)
Bore x stroke: 89.0 x 64.0 mm
Compression: 11.0:1
Cooling system: Liquid
Fuel system: Carburettor
Starting: Electric & kick
Ignition: Kokusan digital 4K-3B
Valves per cylinder: 4
Lubrication system: Pressure lubrication with 2 Eaton pumps
Torque: Not on record - add it

Transmission

Gearbox: 6-speed
Transmission type: Manual
Final drive: Chain
Clutch: Wet multi-disc clutch, operated hydraulically

Dimensions & weight

Wheelbase: 1481 mm
Overall width: 400 mm
Seat height: 925 mm
Dry weight: 113.5 kg
Fuel capacity: 8.00 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: 90/90-21
Rear tyre: 140/80-18

Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.

What changed, year to year

Differences highlighted

Specification	2000	2002	2004	2005	2006	2007
Capacity	398 cc	398 cc	398 cc	398 cc	398 cc	398 cc
Dry weight	112 kg	112 kg	117 kg	114 kg	114 kg	114 kg
Seat height	925 mm	925 mm	925 mm	925 mm	925 mm	925 mm
Fuel capacity	9 L	9 L	8.5 L	8 L	8 L	8 L