Sonder Alpha 29 [OEM]

Fast and tough 29” mtb boost wheels


29” boost wheels with sealed bearings for aggressive trail riding

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Alphas are our performance 29er wheelset for aggressive trail riding. Whether you're riding down Top Chief at Fort William or riding the black routes at Bike Park Wales, Alphas will consistently spin up to speed and keep rolling to help you ride with fluid precision over the trails.

Alpha hubs: wider, stiffer, tougher, faster

Alpha’s boost hub is wider than a standard hub; extra width between the flanges promotes a shallower spoke bracing angle to create a stronger, stiffer wheel. A wider hub also means a shorter chainstay, more mud clearance, and better tyre clearance. To make them faster we’ve used a 6 pawl freehub, which gives 120 points of engagement for immediate response when you turn the pedals (most hubs only have 60, which means you have to turn the pedals further before engaging the freehub). Oh, and the hubs sound amazing! Finally, sealed endure bearings just keep rolling and rolling.

Wider rims mean tyres work better

30mm lightweight aluminium rims make this wheelset ideal for rock gardens and technical terrain – you can run 2.2" - 2.6" tyres, which will plump up really nicely to give a broad contact patch for maximum traction and confidence.

Built to take abuse

Alphas have sealed bearings that are easily serviceable without the need for specialist tools. Plain-gauge spokes have been chosen to keep the wheels super-strong, whether you’re landing big drops or loading your bike with luggage. And a 17mm alloy axle make these hubs super-stiff and super-strong. You could race round the world on these wheels. Silk Road Mountain Race here we come!


Key Features

  • Wide rims increase the contact patch of tyres and reduce rolling resistance
  • 6 pawl freehub gives 120 engagement points for immediate pedalling response (most hubs only have 60)
  • Sealed enduro cartridge bearings mean low maintenance and fast rolling
  • 3 Year Alpine Bond

Vital stats

Wheel Spec

Alpha Rim: internal width 30mm. Takes 29x2.2-2.6 tyres
Alpha boost hub: 15mm thru-axle front, 12mm thru-axle rear with 6 pawl freehub
Spokes: Stainless steel plain-gauge
Sealed enduro cartridge bearings
Alloy free-hub body for durability


Front: 960g Rear: 1140g


The Details