2005, 2006, 2007 Honda 400ex Specs TRX400EX Specifications
2005, 2006, 2007 Honda 400ex Specs TRX400EX Specifications

| Model: | TRX400EX |
| Engine Type: | 397cc RFVC air-cooled dry-sump single-cylinder four-stroke |
| Bore and Stroke: |
85mm x 70mm |
| Carburetion: | 38mm piston-valve with accelerator pump |
| Ignition: | CD with electronic advance |
| Starter: | Electric |
| Clutch: | Manual |
| Transmission: | Five-speed with reverse |
| Driveline: | O-ring-sealed chain |
| Suspension: | Front: Independent double-wishbone with Showa shocks, five-position spring preload adjustability; 8.2 inches travel Rear: Pro-Link fully adjustable single Showa shock; 9.1 inches travel |
| Brakes: |
Front: Dual hydraulic 174mm discs |
| Tires: |
Front: 22 x 7-10 knobby radial |
| Length: | 72.2 inches |
| Width: | 45.3 inches |
| Height: | 43.7 inches |
| Seat Height: | 31.9 inches |
| Ground Clearance: | 4.3 inches |
| Wheelbase: |
48.4 inches |
| Turning Radius: | 10.5 feet |
| Dry Weight: | 386 pounds |
| Fuel Capacity: | 2.6 gallons, including 0.4-gallon reserve |
| Colors: | Red, Black (2006-2007 only), Yellow (2005 only) |