Yamaha YZ 450 F - 2006 Specifications and Reviews

The 2006 Yamaha YZ450F is a competitive 449cc four-stroke motocross machine designed for intermediate to advanced riders seeking race-ready performance. Known for its potent V-twin engine and responsive power delivery, it dominated the MX2 class with excellent handling and reliability. The liquid-cooled DOHC engine delivers strong mid-range torque ideal for varied track conditions.

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General information

CategoryCross / motocross
Year2006
ModelYamaha YZ 450 F
 
 

Engine and Transmission Specifications

ClutchWet, multiple-disc
Transmission type,final driveChain
Gearbox5-speed
Cooling systemLiquid
Lubrication systemDry sump
IgnitionCDI
Fuel controlDOHC
Fuel systemCarburettor. Keihin FCR37H
Bore x stroke95.0 x 63.4 mm (3.7 x 2.5 inches)
Compression12.3:1
Engine typeV2, four-stroke
Capacity:449.00 ccm (27.40 cubic inches)
 
 

Brakes, suspension, Frame and wheels

Rear brakes diameter245 mm (9.6 inches)
Rear brakesSingle disc
Front brakes diameter250 mm (9.8 inches)
Front brakesSingle disc
Rear tyre dimensions110/90-19
Front tyre dimensions80/90-R21
Rear suspension travel125 mm (4.9 inches)
Rear suspensionSwingarm (linked type monocross)
Front suspension travel300 mm (11.8 inches)
Front suspensionUpside-down telescopic fork

Physical measures and capacities

Fuel capacity7.00 litres (1.85 gallons)
Wheelbase1,495 mm (58.9 inches)
Ground clearance373 mm (14.7 inches)
Overall width815 mm (32.1 inches)
Overall length2,197 mm (86.5 inches)
Overall height1,300 mm (51.2 inches)
Seat height998 mm (39.3 inches) If adjustable, lowest setting.
Dry weight99.8 kg (220.0 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
StarterKick

Performance Profile & Rider Fit

Best For

Track55%
City5%
Cornering60%
Daily Riding8%
Touring5%
Passenger0%

Rider Profile

Best ForThis is a full-race competition motocross bike best suited to experienced off-road or motocross riders, not beginners.
PurposeBuilt purely for motocross racing and serious off-road riding, not for commuting or general road use.
Rider FitIts tall 988mm seat height, minimal weight, and aggressive suspension travel demand good rider fitness, strength, and off-road skill to control effectively.
CharacterA light, high-revving, race-bred single-cylinder machine that rewards aggressive riding, quick direction changes, and confident throttle control.
Not Ideal ForNot suitable for riders wanting a comfortable commuter, a passenger-friendly bike, or any form of long-distance road touring.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2006 Yamaha YZ 450 F Rider Ergonomics Assessment

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Feet:

At 998mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2006 Yamaha YZ 450 F, with a moderate knee angle of around 90 degrees and an upright riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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