The aviator aviator comes equipped with a tig welded cro mo steel frame a distinct lipped chain wheel to help protect your clothes and mudguard mounts for commuting ease preppy sophisticated and urbane all at once sturmey archer rear hub famous for more than a century sturmey archer have always been pioneers in the design of internal gear hubs hub brakes and dynamo lighting creating the first 3 speed bicycle hub in 1902 built tested and tuned each bike is fully built tested and