The Backbone is a bomber 32mm internal 27.5 trail mountain bike rim. We improve the stiffness, strength and longevity of a wheel by using an asymmetric (ASYM) rim design than improves spoke tension balance by up to 30%. On the trail, this translates to balanced handling you can rely on. With a 32mm internal width it’s perfect for wide trail tires.
Drilled for external nipples. Disc specific rims.
All Astral rims are Tubeless Easy for tire installation that you can set up with a floor pump.
Add a nipple kit for an easier build.
Custom builds available! Any hub, any spec, just contact us with your special project. We’ll make it happen. Services available to dealers.
27.5" ASYM, Tubeless Clincher
Width: Int - 32mm / Ext - 36.3mm
ERD: w/ nipple allowance: 561.5mm, 559 Spoke bed diameter
Max Tension: 130kgf
Hole count options: 28 or 32
Tire size recommendation: 2.2" to 3.0"
*We do our best to ship your wheel order ASAP, but because many wheel orders are built to order, please allow up to one week for shipment once your order is processed. Custom orders like color decals may take up to one week.