2018 Yamaha YZ450FX
| Engine Engine type Bore x Stroke Displacement Valves Compression ratio Max Power Max Torque Fuel system Transmission Final drive Clutch Ignition type Starting system Lubrication Exhaust system Spark plug Battery Gear ratios | Liquid cooled, single cylinder, four-stroke, DOHC 97.0mm x 60.8mm 449cc 4 valves (titanium) per cylinder 12.5:1 Keihin fuel injection, 44mm Wide-ratio constant-mesh 5-speed; multiplate wet clutch "O" ring chain Transistor Controlled Ignition Electric & kick starter Dry sump 1st: 2nd: 3rd: 4th: 5th: |
| Dimensions Frame type Rake/trail Overall length Overall width Overall height Wheelbase Seat height Ground clearance Weight Fuel capacity Color Suspension (front) Suspension (rear) Tyre (front) Tyre (rear) Brake (front) Brake (rear) | 85.2 inches 32.5 inches 50.4 inches 57.7 inches 38.0 inches 12.8 inches 262 lb 2.0 gal Team Yamaha Blue KYB spring-type fork; fully adjustable, 12.2-in wheel travel KYB single shock; fully adjustable, 12.5-in wheel travel 90/90-21 Dunlop AT81F 120/90-18 Dunlop AT81 Single 270mm hydraulic disc with twin piston caliper Single 245mm hydraulic disc with single piston caliper |
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