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.
Light, wide rims increase the contact patch of tyres and reduce rolling resistance Super-stiff 15mm axle Sealed cartridge bearings mean low maintenance Covered by our 28 Day Ride GuaranteeDynamo
Powers lights and charging packs by pedal power Tested down to -20°C Compatible with Sonder Nova and Sonder Aero wheels
6V (Includes connector)
12mm bolt through M12x100mm
100mm hub spacing
Compatible with QR endcaps
6 bolt disc mount
Alpha Rim: Tubeless-ready. Internal width 23mm. Takes 650Bx47mm road plus up to 27.5x2.2” MTB tyres, 28h
Alpha hub: 12mm thru-axle with 6 pawl freehub
Spokes: Stainless steel double-butted
Sealed cartridge bearings
Alloy free-hub body
28 hole front and rear