Extra reactive braking response, a unique parking mechanism, and the ability to lock the wheel with a person hand only. This bike is much enjoyment! The fellows at Surron Motor were super helpful with every little thing. I was so fired up once the bike last but not least came. https://surronstormbee37148.tokka-blog.com/37053958/5-tips-about-surron-electric-bike-you-can-use-today