Serpentine Wheelset (29") Project321 Hubs

The Serpentine Trail is a bombproof mountain bike wheelset. 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 precise handling you can rely on. Add a 32mm internal width for ideal support of fat rubber. 

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.

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

• 29" Alloy Clincher - ASYM
• Rim Depth: 20mm asymmetric [ASYM]
• Rim Width: [ex] 36mm, [in] 32mm
• Tubeless ready
• Weight:  1795g
• Brake type: Disc brake, 6 Bolt
• Spoke count:  28/28
  
• Spoke type: Sapim Race, Round
  
• Hubset: Project 321, Boost 
• Hub Body: 6-Bolt, CNC machined in Bend Oregon
• Bearing: Precision Stainless
• Front Axle Options: Boost, 15mm
• Rear Axle Options: Boost, 142mm TA/ 135mm QR    
• 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