Backbone Carbon X Wheelset (27.5") Project321 Hubs

The Backbone Carbon X is a 30mm internal 27.5 trail-slayer. Stiff, robust rims hold a line in any condition. The light-weight, smooth carbon-ride perfectly match the flickability inherent to smaller wheels. 

Made just over the mountains from us in Bend, Oregon, Project 321 hubs offer absurdly fast, 216-point engagement and light-yet-strong alloy free-hubs. We use their “loud” pawl system for rock-solid reliability.

All Astral wheels feature a Tubeless Easy rim profile for painless tire installation and are hand-built by people that care in Eugene, Oregon.

Need a special build? We can do that. Contact us for dream-builds or rebuilds and we’ll make it happen. Services also available through dealers

Build Specifications:

Project 321 Hub Build

• 27.5" Carbon - Hookless, tubeless ready
• Rim Depth: 25mm Carbon Clincher
• Rim Width: [ex] 37mm, [in] 30mm
• Weight:  1805g
• Brake Type: Disc brake, 6 Bolt
• Spoke count:  32/32
  
• Spoke type: Sapim Race, Round
  
• Hubset: Project 321, Boost 
• Hub Body: CNC machined in Bend Oregon
• Bearing: Precision Stainless
• Front Axle Options: Boost, 15mm
• Rear Axle Options: Boost, 142mm TA/ 135mm   
• Freehub Options: Shimano HG 10, SRAM XD or Shimano Micro Spline
• Freehub Material: CNC Machined  Alloy, 216T high engagement, loud
• Tire size recommendation: See chart in product images
  
• Includes: Taped for tubeless, tubeless valves and Astral's Certainty