The Brompton M3L 2013 Folding Bike. The Brompton range has been updated for 2013, they now come with a range of new components that have been manufactured in-house at Brompton. These updates include; New Brake Levers: these now have adjustable reach with improved grip, power and response, they look beautiful too! Wheels: The new rim is double-walled rather than single-walled, improving durability and performance. Handlebar Grips: Now black, with a smoother finish for a more comfortable ride. Brompton Tyres: Kevlar-lined for great durability as before, now all-black and with the Brompton logo to offer a sleeker look. Chain set; is now stiffer and stronger than ever before.