Sonder Alpha 27.5 is our performance wheelset for aggressive riding. They come alive on tight, twisty terrain and accelerate fast to make root-riddled trails easy to manoeuvre. They’re at home in your local trail centre, ready to play on the red runs.
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 for rock gardens and tough, technical terrain. 30mm internal width means you can run up to 2.8" 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 a 17mm alloy axle make the hubs bombproof.
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.
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.
Alpha Rim: Internal width 30mm, takes 2.2 to 2.8” tyres.
Alpha boost hub: 15mm thru-axle front, 12mm thru-axle rear with 6 pawl freehub
Spokes: Stainless steel double-butted
Sealed cartridge bearings
Alloy free-hub body for durability
Front: 980g Rear: 1160g