Rad Power Bikes RadRunner Max
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Facts
Summary of Reviews
We have read all expert and user reviews on the Rad Power Bikes RadRunner Max. In summary, this is what cyclists think. Published Jul 21, 2025 by Jordan Grimes.
15 reasons to buy
- All testers love how comfortable the RadRunner Max is, highlighting the smooth ride and good ergonomics.
- Reviewers from 5’1” to 5’11” find this one-size frame a good fit.
- The Gemma hydraulic disc brakes provide good stopping power and modulation.
- Experts enjoy the RadRunner Max’s Class 3 top speed, strong climbing performance, and smooth but fast acceleration.
- The well-tuned torque sensor delivers responsive pedal assistance.
- In a PAS level 5 range test, the reviewer gets 33.3 miles on a flat, paved route.
- Rad Power sells a range-extender that doubles this bike's battery capacity.
- The RadRunner Max can carry up to 420lb, including 120lb on the rear rack.
- This bike has fenders, a radar that warns of vehicles approaching from the rear, remote locking, Apple FindMy tracking (iPhone only), and a USB-C port for powering devices.
- The RadRunner’s lights turn on automatically and feature brake activation and turn signals. The 750-lumen headlight has high and low beams and a flashing mode.
- Reviewers praise the RadRunner Max’s user-friendly design and suitability for beginners.
- The bike’s IPX6 water ingress protection rating is above average.
- Assembly is relatively quick, and Rad Power provides the necessary tools as well as both written and video instructions.
- The “well-designed” two-legged kickstand makes loading cargo easy.
- The remaining battery is shown as a percentage.
6 reasons not to buy
- The RadRunner Max is very heavy at 83lb (97lb with range extender), making it difficult to lift or transport.
- The included charger has a below-average 2A output, meaning a seven-hour charge time for the main battery, and twice that with the range extender installed.
- Two 5’11” testers find the handlebars slightly low, adding that riders at the upper end of the 4’11” to 6’2” height range will find the bike too small.
- The turn signals don’t self-cancel.
- A reviewer finds the display's range estimator inaccurate.
- The range extender requires purchasing a battery housing and doesn’t come with a second charger.
Bottom line
Rad Power’s RadRunner Max is a Class 3 utility e-bike and the most capable of the three RadRunner models. The 120lb-rated rear rack, front rack mounts, and optional accessories provide solid cargo-carrying potential. Experts enjoy the RadRunner’s comfortable ride, Class 3 speed, and climbing performance. The PAS 5 battery range, feature-rich lighting, and radar also impress. Most complaints are minor, but prospective buyers should consider the bike’s heavy weight, slow charging, and slightly exaggerated height range. In short-term testing, the RadRunner Max proves itself to be an excellent and versatile urban e-bike.Expert Reviews
87/100 based on 2 rated expert reviewsRad Power Bikes RadRunner Max Review | Maxed Out
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