The Box One Quantum BMX Race Hubset has been a cool 7 years in the making. The end result is a super tough hub with fewer dead spots and less drag than many other hubs out on the track.

To achieve this, the rear Quantum hub uses the type of one-piece driver commonly found on “freestyle" hubs. Each hubset includes a one-piece, 16-tooth driver supported by three large, roller bearings. Inside the driver are six pawls, each with two teeth that engage a 60-tooth ratchet ring, meaning the hub has just 6 degrees of engagement.

"The end result is a super tough hub with fewer dead spots and less drag than many other hubs out on the track"

The Quantum front hubs are available with 20mm axles only, but the rears can be easily converted between 10, 15 and 20mm axles. Each set includes a front and rear 20mm set-up, with additional spacers included. Optional 10mm and 15mm axle kits are sold separately.

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Just like all Profile parts, they are made in St. Petersburg, Florida, USA.

  • Axle Material 7075-T6 Aluminum
  • Driver Material Chromoly
  • Engagement 60-tooth ratchet ring, 6 pawls with dual teeth for 6° of engagement
  • Finish Anodized black with laser-etched graphics and orange labyrinth seal
  • Hole Count 36
  • Hub Material 6061-T6 Aluminum
  • Weight 162 grams / 5.7 ounces (front), 595 grams / 21 ounces (rear w/o axles)

Includes:

  • (1) 20mm front axle
  • (1) 20mm rear axle
  • (2) Axle spacers
  • (1) 16 tooth driver

Front Hub Dimensions:

  • Flange Diameter: 48mm
  • 2.65mm Spoke Holes
  • 69mm Flange to Flange Width

Rear Hub Dimensions:

  • Flange Diameter: 61mm (both)
  • 2.65mm Spoke Holes
  • 55mm Flange to Flange Width
  • Rt. Flange to Center: 28mm
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