| General |
| Comments | Model id: CRF450R | - |
| Colours | Red | Team Yamaha Blue |
| Warranty | - | 30 Day Limited Factory Warranty |
| Dimensions |
| Width (in.) | 32.6 inches | 32.5 inches |
| Ground Clearance (in.) | 13.0 inches | 14.2 inches |
| Width (mm) | 827 mm | 826 mm |
| Height (in.) | 50.0 inches | 50.8 inches |
| Height (mm) | 1,271 mm | 1290 mm |
| Length (in.) | 86.3 inches | 86.0 inches |
| Ground Clearance (mm) | 330 mm | 361 mm |
| Seat Height (in.) | 37.5 inches | 38.4 inches |
| Seat Height (mm) | 953 mm | 975 mm |
| Wheelbase (in.) | 58.7 inches | 58.3 inches |
| Wheelbase (mm) | 1,492 mm | 1481 mm |
| Length (mm) | 2,191 mm | 2184 mm |
| Seat Height | 953 mm / 37.5 in. | 975 mm / 38.4 in. |
| Wheelbase | 1,492 mm / 58.7 in. | 1481 mm / 58.3 in. |
| Height | 1,271 mm / 50.0 in. | 1290 mm / 50.8 in. |
| Length | 2,191 mm / 86.3 in. | 2184 mm / 86.0 in. |
| Width | 827 mm / 32.6 in. | 826 mm / 32.5 in. |
| Weights & Capacities |
| Fuel Capacity (gal.) | 1.70 gallons | 2.11 US gallons |
| Fuel Capacity (l) | 6.43 litres | 8.00 litres |
| Wet Weight (kg) | 110.2 kg | 103.0 kg |
| Oil Capacity (Quarts) | 0.12 quarts | 0.85 US quarts |
| Oil Capacity (l) | 1.80 litres | 0.80 litres |
| Wet Weight (lbs.) | 243.0 pounds | 227.0 pounds |
| Fuel Capacity | 6.43 litres / 1.70 gallons | 8.00 litres / 2.11 US gallons |
| Wet Weight | 110.2 kg / 243.0 lbs | 103.0 kg / 227.0 lbs |
| Performance |
| Top Speed (mph.) | 105.6 mph | - |
| Top Speed (km/h) | 170.0 km/h | - |
| Top Speed | 170.0 km/h / 105.6 mph | - |
| Max Torque | 48.00 Nm (4.9 kgf-m or 35.4 ft.lbs) @ 7000 Revolutions | - |
| Engine |
| Displacement (ci) | - | 15.19 cubic inches |
| Engine Type | Single cylinder, four-stroke | Single cylinder, two-stroke |
| Fuel Control | Single Overhead Cams (SOHC) | - |
| Bore x Stroke (mm) | 96.0 x 62.1 mm | 66.4 x 72.0 mm |
| Bore x Stroke (in,) | 3.8 x 2.4 inches | 2.6 x 2.8 inches |
| Displacement (cc) | - | 249.0 cc |
| Engine Detail | - | Reed-valve inducted |
| Fuel System | Injection. PGM-Fi | Carburettor. Hitachi Astemo® Keihin PWK38S |
| Compression Ratio | 13.5:1 | 10.6:1 |
| Engine Lubrication | - | Premix |
| Exhaust | Twin-muffler | - |
| Ignition | Fully transistorized with electronic advance | CDI |
| Starter | Kick | Electric |
| Drivetrain |
| Clutch | Multi plate wet clutch | - |
| Final Drive | Chain | Chain (final drive) |
| Gearbox | 5-speed | 5-speed |
| Primary Drive | Constant mesh | Constant-mesh |
| Chassis |
| Wheel Travel - Front (in.) | 12.0 inches | 11.8 inches |
| Wheel Travel - Front (mm) | 305 mm | 300 mm |
| Wheel Travel - Rear (in.) | 12.3 inches | 12.4 inches |
| Wheel Travel - Rear (mm) | 312 mm | 315 mm |
| Trail (in.) | 4.6 inches | 4.8 inches |
| Trail (mm) | 116 mm | 122 mm |
| Frame Type | Aluminium twin tube | Semi-double cradle, aluminium |
| Suspension - Front | 49mm inverted Showa fork with rebound and compression damping adjustability. | KYB® Speed-Sensitive System inverted fork; fully adjustable |
| Suspension - Rear | Pro-Link® Showa single shock with adjustable spring preload, rebound and compression damping adjustability. | KYB® single shock; fully adjustable |
| Rake | 27.2° | 27.7° |
| Trail | 116 mm / 4.6 in. | 122 mm / 4.8 in. |
| Wheel Travel - Front | 305 mm / 12.0 in. | 300 mm / 11.8 in. |
| Wheel Travel - Rear | 312 mm / 12.3 in. | 315 mm / 12.4 in. |
| Wheels & Brakes |
| Brakes - Front Diameter (mm) | 260 mm | - |
| Brakes - Rear Diameter (mm) | 240 mm | - |
| Brakes - Front Diameter (in.) | 10.2 inches | - |
| Brakes - Rear Diameter (in.) | 9.4 inches | - |
| Brakes - Front | Single disc. Hydraulic. Two-piston calipers. | Single disc |
| Brakes - Rear | Single disc. Hydraulic. Single-piston caliper. | Single disc |
| Rims | Dunlop tyres | Dunlop® Geomax MX33 tyres |
| Tyres - Front | 80/100-21 | 80/100-21 |
| Tyres - Rear | 120/80-19 | - |