Yamaha YZ450F’s rearward-slanted cylinder is a revolutionary advancement that achieves unmatched mass centralization, concentrating inertial mass toward the center of the machine. This bold design also swaps traditional intake and exhaust positions, putting the lightweight airbox and throttle body out front. This contributes to mass centralization for nimble handling while also achieving a straight intake tract for superb combustion efficiency that delivers more power.
| MSRP* | $8,250 (White/Red) Available from September 2010 $8,150 (Team Yamaha Blue/White) Available from September 2010 |
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| ENGINE | |
| Type | 449cc liquid-cooled DOHC 4-stroke; 4 titanium valves |
| Bore x Stroke | 97.0 x 60.8mm |
| Compression Ratio | 12.5:1 |
| Fuel Delivery | Yamaha Fuel Injection (YFI), Keihin® 44mm |
| Ignition | CDI |
| Transmission | Constant-mesh 5-speed; multiplate wet clutch |
| Final Drive | Chain Drive |
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| CHASSIS | |
| Suspension / Front | KYB® Speed-Sensitive System, inverted fork: fully adjustable, 12.2-in travel |
| Suspension / Rear | KYB® Fully adjustable single shock; 12.4-in travel |
| Brakes / Front | Hydraulic single disc brake, 250mm |
| Brakes / Rear | Hydraulic single disc brake, 245mm |
| Tires / Front | 80/100-21-Dunlop® D-742FA |
| Tires / Rear | 120/80-19-Dunlop® D-756 |
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| DIMENSIONS | |
| Length | 86.3 in |
| Width | 32.4 in |
| Height | 51.6 in |
| Seat Height | 39.3 in |
| Wheelbase | 58.7 in |
| Ground Clearance | 15.0 in |
| Fuel Capacity | 1.63 gal |
| Wet Weight*** | 245 lb |
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| OTHER | |
| Warranty | 30 Day (Limited Factory Warranty) |
