Biologic Joule™ 3 Dynamo Hub Comp Wheel (Front)
Power When You Need It
This product is currently sold out.
- 73% generator efficiency — one of the most efficient
- One of the lowest drag of all available dynamo hubs
- Built and trued by hand
- Butted spokes are light but strong
- Double-walled rims for stiffness and strength
- German StVZO compliant (3W, 6V)
- Technical Details
The Joule 3 dynamo hub 20” rim set lets you generate electricity to power your lights or charge devices on your bike while riding. The Joule 3, winner of a 2012 Eurobike Award, is one of the lightest, most efficient bicycle dynamo hubs on the market, which means more power generated at a given speed. 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.
Color(s) Black Dimensions n/a Weight 20": 853 g (w/o skewer) Load Capacity n/a Volume Capacity n/a Compatible Bikes 20": Fits 20” bicycles with 74 mm OLD
24": Fits bicycles with 100 mm OLD
Compatible Items Valo™ 2 Light Material n/a