BioLogic Joule 3 Dynamo Hub

5 out of 5 based on 2 customer ratings
(2 customer reviews)

$ 129.95$ 149.95

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  • 73% generator efficiency — one of the most efficient on the market
  • One of the lowest drag of all commercially available dynamo hubs
  • Super-light, super-compact hub design for minimal weight and air drag
  • CNC-finished 6061 aluminium housing
  • Available in 2 sizes: 20 holes, 74mm OLD for 20″ (inch) wheels and 32holes, 100mm OLD for 24″ and above
  • The 100mm version is compatible with V-brakes and disc brakes
  • German StVZO compliant (3W, 6V)
  • Weight: 362g (74mm OLD) ; 416 g (100mm OLD)

The BioLogic Joule 3 dynamo hub is one of the lightest, most efficient bicycle dynamo hubs on the market. This means more power at a given speed for brighter lights or for charging devices on your bike while you ride. The patented magnet configuration yields barely noticeable drag while a polished, laser etched, and precision machined flange pattern present high performance in a beautiful small package. The BioLogic Joule 3 dynamo hub was awarded a Eurobike Award and works with all standard dynamo hub powered lights such as the Tern Valo 2.0. Available in silver and black.


  • BioLogic Joule 3 Dynamo Hub
  • Quick-release skewer
  • Cable connector
  • Product manual

Rim, spokes, tire and inner tube not included.

2 reviews for BioLogic Joule 3 Dynamo Hub

  1. 5 out of 5

    (verified owner):

    seperti penampakan aslinya dan beberapa contoh di youtube, teryata pemasangannya tidak terlalu sulit, dan energi yang dihasilkan sangat baik untuk lampu depan dan lampu belakang sepeda ini. memuaskan!

  2. 5 out of 5

    (verified owner):

    A wonderful little piece of good and useful technology! Very well made and very efficient.
    My Joule 3 was assemble (29″ new rims on my city/trekking bike) in pair with a Valo 2 light and although Lisbon have a wonderful good margin of sun exposure, I can say that the late afternoon and evening have become much more pleasant by the efficiency of the whole Joule3 / Valo2.
    This hub is amazing, and at least for now don’t feel the effect of drag, so I can quickly move safely without greater commitments.
    It is a pity there is no representative to potentiate the benefit of having products Biologic in Portugal to promote more sustainable mobility.
    Summarizing: Product 5 Stars!

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