*Free shipping on orders over $99

Free Shipping Policy

Free Shipping applies to all orders placed for $99 and above
(pre-tax value). Some restrictions apply:

  • Offer valid in the Lower 48 States only
  • Excludes Complete Bicycles, Framesets, and some other oversize items
  • Excludes certain sale items


Equipment > Components > Bottom Brackets > Road


Wheels Manufacturing works hard to keep up with new standards and designs, and these T47a (asymmetrical) threaded BB cups are being offered for T47a frames and Shimano compatible 24mm spindle diameter compatible cranks. The cups have internal bearings, but external notches, and can be used in BB shells with widths from 77.5 - 79mm. These achined aluminum cups thread together directly into a Cervelo, Factor or Felt T47a BB shell. The bearings are easily serviced or replaced. This complete unit includes the internal sleeve to fit between cups for added protection from dirt and grime, and has the benefit of keeping your internal wires and hoses from rubbing on the crank spindle.

T47a BB cups are similar to standard BSA threaded cups in that the drive side cup is left-hand thread and the non-drive side cup is right-hand thread. The tool size required is a 48.5mm x 16-notch cup tool, with a flush surface. Always use a quality grease when installing in steel or aluminum threaded BB shells. For Excel Sports and Cervelo customers, as of early 2023 the Soloist and R5CX models require at T47a bottom bracket.

Return to Top

  • ABEC-3 bearing grade T47 threaded bottom bracket for specified framesets that use an asymmetrical bottom bracket design
  • T47 external cup on the drive side
  • T47 internal cup on the non-drive side
  • Compatibility (at release):
    • Cervelo T47a 79mm BB shell width
    • Factor T47a 77.5mm BB shell width
    • Felt T47a 77mm BB shell width
  • Bearings: Enduro ABEC-3
  • Bottom Bracket/Frame Interface: T47a
  • Bottom Bracket Shell Width (mm): 77.5 - 79
  • Bottom Bracket Shell I.D.: 47x1.0mm Threaded
  • Crank Spindle Diameter: 24mm
  • Tool Pattern: 48.5mm x 16-notch
  • Includes: 2 silicone dust shield, 4 plastic spacers (for use as needed)
  • Color: Black
  • Weight: tbd
Return to Top