Extra reactive braking response, a novel parking mechanism, and a chance to lock the wheel with a single hand only. This bike is so much fun! The blokes at Surron Motor were super helpful with all the things. I was so enthusiastic once the bike eventually arrived. I'd personally suggest https://rylanlhcxs.blog-gold.com/48617178/getting-my-surron-ultra-bee-charger-to-work