Dark Deal: Praxis Conversion BB - 73mm BB30/PF30 to 30MM RACE FACE “CINCH” or 30mm Rotor “REX1”  (MOUNTAIN)

Dark Deal: Praxis Conversion BB - 73mm BB30/PF30 to 30MM RACE FACE “CINCH” or 30mm Rotor “REX1” (MOUNTAIN)

SGD 75.00 SGD 127.50 Save SGD 52.50

Dark Deals Conditions:

  • Priced to clear.
  • Items are Brand New, unless otherwise stated.
  • Strictly only available through our online store.
  • Orders ship directly from one of our warehouses.
  • Promotion is not available at any of our dealers / retail store.
  • Not applicable with any other discount or promotion.
  • No cancellation or refunds accepted.
  • First come, first serve only. No reservations allowed.
  • Does not include installation.


Designed to be a proper BB for installing RACE FACE “CINCH” or Rotor “REX” MTB cranks into 73MM BB30/PF30 mountain frames.  Our patent pending design keeps the Enduro 6806 cartridge bearings outboard of the frame for greater rigidity and free of frame/c-clip tolerance issues that other systems deal with.

Simply press in the longer non-drive-cup, then thread the shorter Drive cup into it.  As the drive cup threads in, our trademark Collet system expands to a precise limit evenly dispersing pressure for a super tight fit. With both cups connected and our collet set exactly to spec, there is no chance the bearings can come out of alignment or wiggle/walk out of the frame.  This design also uses a compressible o-ring on the non-drive side cup to compensate for frame shell width discrepancies.

  • For 73mm 30MM RACE FACE “CINCH” or 30mm Rotor “REX1” MTB cranks only.  
  • 30mm Drive & 30mm NonDrive | 6806 Steel bearings
  • For install in 73mm MTB BB30 and PF30 MTB frames
  • Forged & machined heat-treated AL Cups
  • VIP –  The Praxis M30 BB tools are needed for installation.
  • MTB Guides -ISCG05 & ST Mounted Good, ISCG03 Not Good
  • Patent Pending Design
  • “Collet” style non-drive cup expansion for wiggle-free press
  • Non-Drive O-Ring compensates for frame width discrepancies




      Praxis Warranty Statement


      *This product ships to Singapore, Thailand, Philippines, Brunei, Cambodia, Vietnam & Indonesia. 
      *If your location is not listed above, check if there is a Distributor in your country here.
      *If there is no distributor in your country, we might be able to ship to you, just contact us for more information.