Sonder Alpha 650b Dynamo Wheelset

Sonder Alpha 650b Dynamo is our performance disc brake wheelset built specifically for gravel and road adventure and to connect your lights or recharge your batteries. . They’ve been designed with long rides and endurance riding in mind. 

• Disc brake specific and tubeless-ready design up 47mm road or up to 2.2” MTB tyres
• 23mm internal width, Sapim double butted spokes
• 120-point engagement for quick acceleration and pedalling efficiency
• Built to last: fully serviceable and repairable with no specialist tools required

For the rear we’ve used a 6-pawl freehub for instant acceleration and maximum pedalling efficiency. This gives 120 points of contact - just 3° of rotation between each click. With faster engagement, the wheels respond the minute you put the hammer down and save wasted watts.

Made from a premium KLM41 (6061) alloy, we’ve been able to maximise rim strength and stiffness for a lower weight. They’re also welded and pre-taped for a tubeless-ready set up to save more weight and reduce rolling resistance.

23mm wide the Alpha 650b wheels are optimised up to 47mm road or 2.2" MTB tyres. By using wider tubeless tyres you’ll be able to run lower pressures, giving you even better traction, improved comfort and reduced risk of pinched punctures. While they’re light, they stay super-strong because of a shorter spoke triangle.

Sonder Juice Dynamo Hub

The Sonder Juice dynamo hub can power your lights and keep your electronic devices charged when you are far from civilisation, when batteries and plug sockets are a distant memory. All you have to do is keep pedalling!

The Juice is a highly efficient, low drag device with a 6V / 3W output. Suitable for road, gravel and mountain bikes, it's tested down to -20°C so you can rely on pedal power even in extremes conditions.

We do not recommend charging your expensive electronic gadgetry directly from the hub dynamo. It provides an unregulated AC output that you will need to convert via a USB charger to provide a reliable DC current.