Onyx Ultra Disc BMX Rear Hubs

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Onyx BMX hubs feature a patented sprag clutch gearbox that allows drag-free performance when coasting, and instantaneous engagement under power. Onyx Racing Products are available in a wide variety of axle options and colors for a highly customizable kit.

Ceramic bearings, and titanium hardware are included stock with Onyx Pro, Ultra, and Ultra SS hubs.

The Ultra series is compatible with standard HG cogs and offers an axle configuration to fit almost any frame.     

Not sure which Onyx BMX hub to choose?  Compare Onyx Racing BMX Disc hubs.

Technical information:

  • Hole Count: 36 Only
  • Weight:+/- 5%
    • 110/10mm bolt-on: 465g
    • 110/12mm thru axle: 451g
    • 110/15mm thru axle: 421g
  • Brake Compatibility: ISO 6-bolt disc brake rotors
  • Bearings: Ceramic bearings included
  • Gearbox: Infinite engagement sprag clutch system with 34 sprags
  • Axle: 10mm bolt-on, 12mm Thru Axle, 15mm Thru Axle,  
  • Cog compatibility: Shimano HG (Hyperglide)
  • Your color choice for "widgets" (end caps, cones, spacers)
  • Wheel building dimensions:
    • Drive side flange diameter: 60mm
    • Non-drive side flange diameter: 60mm
    • Drive side center to flange: 33.2mm
    • Non-drive side center to flange: 20.1mm

Inventory Note: Due to the wide variety of axle type and hubshell colors ALL Onyx BMX hubs are special order, and typically ship within 5-10 business days.  Please call or e-mail customer service for exact shipping times for your hub preference.

Onyx Limited Warranty:

  • This product is guaranteed against manufacturing defects for five (5) years from the original date of purchase. This covers all components that are manufactured by Onyx Racing Products.
  • This products’ Sprag is guaranteed against manufacturing defects for a period of one (1) year. The bearings are guaranteed against manufacturing defects for a period of one (1) month from the original date of purchase. These are all the components which are NOT manufactured by Onyx Racing Products.
  • Warranty does not cover damage or failure resulting from misuse, abuse, alteration, neglect, normal and reasonable wear and tear, crash or impact, failure to perform routine maintenance as instructed, improper installation, or use other than that for which the product was intended.
DT Swiss utilized its patented star ratchet system that is well known to guarantee high load capacity and reliability. The star ratchet system can be easily upgraded from 18 points of engagement to 36 or 54 points of engagement. This hub uses a center lock rotor mounting design or can be converted to ISO 6 bolt using the DT Swiss Center Lock IS (6-bolt) Adapter

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