The Raleigh Aura is a performance-oriented hybrid bike. Whether it is the alloy frame, alloy flat pedals, or alloy integrated seat post one thing is for sure this bike looks as good as it performs. Loaded with performance features such as the 24-speed Shimano Acera shifting system, higher end alloy disc brakes, alloy Prowheel crank set and alloy double wall rims with Joytech alloy hubs makes the Aura a perfect balance of function and form.