The Joule 3 currently is the lightest, most efficient
bicycle dynamo hub on the market. It can be built up to create super-light
dynamo wheels and its patented magnet configuration yields barely noticeable
drag. Polishing, laser etching, and a precision machined flange pattern give
high performance in a beautiful small package. Available in disc and non-disc
brake versions. Winner of a 2012 Eurobike Award.