Rapid off the mark due to the built-in torque sensor the large duty twenty" wheels and disc brakes this bike is a pleasure to ride 7 velocity Shimano Altus gears Rear pannier rack available for $50. Test rides at our store in Brunswick. see other listing's For additional specials if https://opossum-pronunciation81122.ka-blogs.com/91221130/fascination-about-electric-bike-sale-australia