http://2learnhow.com/story.php?title=topmate-electric-bike-with-500w-powerful-motor Topmate Electric bike for adults is equipped with a 500W high-speed brushless rear hub motor with a top speed of 20Mph and 50Nm torque and can reach a speed of 15Mph in 5 seconds. Wed, 22 Mar 2023 00:26:02 UTC en