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Standard delivery to UK addresses is free over £29.

Next Day deliveries will be shipped same day if you place your order before 2pm Monday - Friday.

If you are not happy or have changed your mind you can return your unused product within 123 days of placing the order for a refund. Simply return it to us, free of charge, with all the original packaging.


Sonder Alpha XC is our lightweight and efficient wheelset. Ideal for long days of singletrack, shaving time of your favourite red run or even endurance racing.

  • 23mm rims are optimised for up to 2.4” tyres
  • Welded construction provides a better seal for tubeless setups
  • Sapim double-butted spokes for strength and weight saving
  • 120-point engagement for quick acceleration and pedalling efficiency.
  • Built to last: fully serviceable and repairable with no specialist tools required.

We use the modern boost standard for all our mountain bike wheels. This gives a wider hub to create a stronger, stiffer wheel with more clearance for mud and tyres. Sealed cartridge bearings keep you rolling longer and are more durable and simpler to service.

Premium KLM41 (6061) alloy rims make this wheelset ideal tough, technical terrain. 23mm internal width means you can run up to 2.4" tyres for maximum traction and confidence.

Sapim double-butted spokes have been chosen to keep the wheels super-strong, whether you’re landing big drops or loading your bike with luggage. And 17mm alloy axles make the hubs bombproof.

60-Day Wheel Ride Guarantee - love them or we'll give you your money back

If you don’t bond with your wheels, you can send them back for a no-quibble refund within 60 days. We’ll even cover the cost of returns postage for UK orders.

Made in Britain

We lace, build and finish all our wheels in our Nottingham factory, with each one getting a full quality control inspection. We’ve brought the build process in house from overseas to enable us to produce something truly special. We can over see the whole construction of our wheels and keep quality consistent, production efficient and reduce the impact on the planet by not shipping boxes of wheels around the world.


Key Features

  • Premium quality alloy rims for strength and stiffness without the weight
  • Stiffer 17mm hub axles for better durability and power transfer
  • Sealed cartridge bearings for longer lifespan and low maintenance
  • Pre-taped welded rims for true tubeless compatibility
  • Pillar double butted alloy spokes to save weight
  • Smooth gloss finish
  • Covered by our 28 Day Ride Guarantee
  • 3 Year Alpine Bond

Vital stats



Tyre Compatibility

1.5” Up to 2.4” (optimised for 2.0” -2.4”) and tubeless compatible


Diameter: 29”
Internal width: 23mm
ERD: 587.5
Tubeless compatible and pre-taped
Matt finish KLM41 premium alloy
Weight: 460g


6-Pawl ratchet system with fully sealed cartridge bearings
17mm alloy hub axles
6061 Alloy Body
6 Bolt Disc Mount


Pillar double butted alloy spokes
28 front, 32 rear

Axle Size

Boost Spacing 148mm x 12mm rear / 110mm x 15mm front

Origin: Taiwan