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Motocross Bikes

2007ATK 450 MX

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The 2007 ATK 450 MX is a competitive motocross machine designed for intermediate to advanced riders seeking aggressive trail and track performance. Powered by a fuel-injected 446cc single-cylinder four-stroke engine producing 46 horsepower, it delivers reliable power with excellent throttle response. Known for its lightweight construction at 109.8kg and nimble handling, this bike excels in technical terrain and demanding racing conditions.

Capacity
446.0 ccm
Engine
Single
Gearbox
5-speed
Dry weight
109.8 kg
Seat height
965 mm
Power
46.0 HP (33.8 kW)
⇄ Compare with another bike + Add to garage All model years
Other years 2007 2008

How it rides

Editorial estimate from the spec sheet - not lab tested
Speed 54Agility 87Comfort 40Off-road 95Touring 20Road manners 30
Off-road & trail95%
Cornering80%
City riding15%
Daily riding20%
Touring15%
Two-up5%
Track35%
Best for
Built for motocross and hard enduro riding, excelling at aggressive off-road use over pavement commuting or touring.
Built for
A raw, high-performance dirt weapon with premium Ohlins suspension and a punchy big-bore single, designed for riders who want race-ready capability rather than creature comforts.
Not ideal for
This is not the right bike for new riders, daily street commuting, passengers, or long-distance 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?

Worked out in your browser - nothing is sent to us
At 965mm, a rider of 68.9" with a 31" (estimated) inseam will not reach the ground comfortably on the 2007 ATK 450 MX, with a cramped knee angle of around 85 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
446.0 ccm
Power
46.0 HP (33.8 kW)
Engine type
Single
Power/weight ratio
0.4189 HP/kg (dry)
Bore x stroke
96.5 x 61.0 mm
Compression
12.3:1
Cooling system
Liquid
Fuel system
Injection
Starting
Electric
Ignition
12v Battery w Constant Energy Inductive Coil
Transmission
Gearbox
5-speed
Transmission type
Manual
Clutch
Hydraulic
Dimensions & weight
Wheelbase
1486 mm
Seat height
965 mm
Dry weight
109.8 kg
Fuel capacity
7.60 litres
Ground clearance
361 mm
Chassis & suspension
Frame
Aluminum Twin-Spar
Front suspension
46mm Ohlins
Rear suspension
Ohlins POS
Front wheel travel
305 mm
Rear wheel travel
320 mm
Brakes & wheels
Front brakes
Single disc. Dual piston, 240mm Rotor
Front brakes diameter
240 mm
Rear brakes
Single disc. Dual piston, 220mm Rotor
Rear brakes diameter
220 mm
Front tyre
80/100-21
Rear tyre
110/100-19

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 20072008
Capacity 446 cc 449 cc
Dry weight 110 kg 110 kg
Seat height 965 mm 965 mm
Fuel capacity 7.6 L 7.6 L

Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.

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Common questions

What is the engine size of the ATK 450 MX?

The 2007 ATK 450 MX has a Capacity of 446.0 ccm (27.22 cubic inches).

What engine power does the ATK 450 MX have?

The 2007 ATK 450 MX has a Power of 46.0 HP (33.8 kW).

How many gears does the ATK 450 MX have?

The 2007 ATK 450 MX has a Gearbox of 5-speed.

How much does the ATK 450 MX weigh?

The 2007 ATK 450 MX has a Dry weight of 109.8 kg (242.1 pounds).

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