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Products: PROJECT 321 G2 Mountain Rear Hub

Price: $390

Our second generation (G2) Rear hub is lighter (by 70 grams!), easier to adjust, and easier to service than the first Generation. Our G2 hub rides on two angular contact bearings which have longer bearing life and more lateral load capacity than radial ball bearings. They can be accurately loaded to adjust bearing preload for zero play and to compensate for bearing wear. We have also designed this hub with a very high oil capacity allowing the user to add oil and dampen the noise level of the hub if desired.

  • Weight 274 grams.
  • Available axles: 135mm QR, 135mm x 10mm TA, 135mm x 12mm TA, 142mm x 12mm TA or 135 bolt on
  • Utilizes the six pawl / 120 point engagement Torch freehub system by Industry Nine.
  • Hub can be converted to any axle or free hub body style (XD1 or standard) at any time
  • 32H and 28H patterns available now.
  • CNC engraved logo (not laser etch or sticker).
  • 3 year warranty for defects in materials or craftsmanship.
  • Made in the USA.
  • Comes standard with Enduro ABEC 5 bearings which include two angular contact bearings. Bearing upgrade options include:
    • Enduro ZERO Ceramic Hybrid add $84 (includes 1x Zero ceramic bearing and 3x grade 5 ceramic hybrids).
  • Available in Standard Freehub Body or XD1 Freehub Body.
  • Six extra freehub body springs included.
  • Available in RED, BLACK, BLUE, GREEN, GOLD and SILVER. Speciality colors available in PINK, PURPLE, ORANGE and TURQUOISE (with limited availability).
  • Want a full wheel set? We hand build in house using Stanís NoTubes, Enve and Kappius rims. Check them out here.
  • PROJECT 321 Hub Specifications and Wheel Building Information

Note: Colors may vary from the pictures shown. Due to the nature of anodizing (and computer screens) there will be slight variations from pictures to in hand product. Project 321 is committed to providing a beautiful, consistent product, therefore, we only ship items that fall within our accepted range. For any questions about the colors please feel free to email us at

Note: Click on the thumbnail images above for full size images.

Available Colors:
Hole Pattern:
Bearing Options:
Freehub Body Options:
Axle Options:
International customers (other than UK and Canada) should contact us directly for PayPal transactions, or check for your international dealer.
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