Yes, e-bikes are legal in the USA, but the rules depend on which class the bike falls into and where you ride it — federal law sets a three-class framework, and each state applies its own specific restrictions on top of that.

Federal law defines a consumer e-bike as a bicycle with a motor under 750W continuous and a top assisted speed under 28 mph — that covers Class 1, 2, and 3 bikes. High-output models like the Cendouk Peak 9000W, which reach 40–47 mph, exceed Class 3 thresholds in all 50 states and are treated as motor vehicles on public roads, not bicycles. Riding them at full speed on public streets is subject to state motor vehicle laws, not bicycle laws.

  • Federal e-bike motor limit: 750W continuous output and 28 mph maximum assisted speed.
  • Class 3 e-bikes top out at 28 mph — the legal ceiling for public-road bicycle classification in the USA.
  • Cendouk Peak 9000W top speed: 47 mph, which exceeds Class 3 limits in every state.
  • E-bikes operating above 28 mph on public roads fall under state motor vehicle statutes, not bicycle rules.
  • Off-road, private property, and designated trail use are where high-output e-bikes can operate within their full performance range.

Important Exceptions

  • High-output bikes on private property: The 28 mph federal threshold does not apply on private land — the Cendouk Peak 9000W can legally run at full 47 mph output there.
  • State-specific Class 3 age restrictions: Several states prohibit riders under 16 from operating Class 3 e-bikes on public roads, even when speed stays within the 28 mph limit.
  • National park and federal trail access: Many federal trail systems ban all motorized bikes regardless of class — check the specific land management agency's rules before riding any e-bike off-road.
  • Throttle-only operation above 20 mph: Class 2 allows throttle use only up to 20 mph; throttling a Class 3 bike past that threshold without pedaling may trigger different legal classification in some states.
  • Helmet laws tied to class, not speed: Some states mandate helmets for Class 3 riders regardless of actual riding speed — the class designation triggers the requirement, not what the speedometer reads.