Californias 2025 E-Bike Laws: Key Changes to Speed, Power, and Safety Regulations

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With weather getting warmer more eBikes are hitting the road.  In 2025, California e-bike laws clarify the definition of an electric bicycle and introduce new regulations regarding speed, power, and throttle restrictions. Specifically, e-bikes are now limited to 750 watts and cannot be modified to exceed 20 mph on motor power alone, with some exceptions for Class 3 e-bikes that can reach 28 mph with pedal assist.

Key Changes in 2025:
    • Definition of an “Electric Bicycle”: The law clarifies that an e-bike must have functional pedals and a motor of 750 watts or less. 
    • Speed and Power Limits: E-bikes cannot be modified to exceed 20 mph on motor power alone or to have a motor exceeding 750 watts. 
  • Safety Certification: E-bike batteries must be certified for safety by 2026. 
  • Non-Compliant E-bikes: E-bikes exceeding these limitations cannot be marketed or sold as “electric bicycles”. 
  • Age and Helmet Restrictions: Class 3 e-bikes require riders to be 16 years or older and all riders must wear helmets. 
  • E-bike Classes and Restrictions: Each e-bike class has specific legal restrictions on where they can be ridden, with Class 1 being most restrictive and Class 3 being more flexible on public roads. 
SB 1271: This bill, which took effect on January 1, 2025, is the primary legislation that introduced these changes. It can be found on the California Legislature website.