CD ignition with electronic advance and 9100-rpm engine rev limiter.USDA-qualified muffler/spark arrester offers quiet operation and maximum power.Stainless steel dual exhaust head pipes resist corrosion.An accelerator pump assures excellent throttle response for maximum power. 38mm carburetor provides light throttle effort, superb air/fuel mixing and excellent driveability.

Closed crankcase vent system safeguards against engine oil contamination.

Maintenance-free automatic cam-chain tensioner.

Dual intake and exhaust ports for maximum engine efficiency in sport operating conditions.

Gear-driven counterbalancer minimizes engine vibration for smooth operation.

Camshaft timing developed especially to meet ATV requirements for torque and useable horsepower.Radial Four-Valve Combustion Chamber (RFVC) for maximum combustion efficiency and horsepower.High-performance 397cc dry-sump air-cooled four-stroke single-cylinder engine.Aggressive body style complements the all-sport appearance.Triple disc brakes provide superb stopping power.Beautiful one-piece cast aluminum swingarm offers exceptional rigidity.Rugged steel frame with removable subframe for easy maintenance.

The 397cc RFVC™ engine draws its breath from the same engine that powered the bulletproof XR®400R.

Five-speed transmission now features reverse.

This high-performance sport model now features reverse and new, stylish bodywork for 2005.

05 honda 400ex swingarm