BKS-0226 – Stainless Steel, Angular Contact Bearings T47 External Threaded Bottom Bracket for 68-73mm Framesets and SRAM DUB Cranksets

This bottom bracket threads into 68–73mm wide T47 framesets and is compatible with SRAM DUB and DUB Wide crankset setups.

This bottom bracket uses a press-in cartridge bearing. If the bearing has been damaged due to percussive removal or installation, the following replacement bearing may be ordered:
• S71806/29 LLB – Stainless Steel, Angular Contact Bearing – 29mm x 42mm x 7mm

You may find the following tools useful for installation:

For bottom bracket installation:
• BBT-52x16-29 – Enduro Pro Cup socket tool for T47 bottom brackets and SRAM DUB cranksets
• GR-009 – Enduro MAX Bearing Grease

For bearing replacement:
• BRT-060-MH – Enduro Bearing Press rod and handle set
• BRT-040-29mm – Enduro bottom bracket bearing removal and installation toolkit for 29mm bearings
• GR-009 – Enduro MAX Bearing Grease

This complete bottom bracket features angular contact, 440C stainless steel balls and races, delivering long life and superior corrosion resistance in demanding applications and harsh environments. While stainless steel has approximately 20% less load capacity and is slightly softer than the 52100 chromium steel used in most standard bearings, it is an excellent choice for wet conditions, frequent washing, or environments where sweat exposure is a concern.

Enduro Bearings also utilizes dual-lip labyrinth (LLB) seals and Enduro Speed Grease to provide enhanced protection against water and contamination. We are so confident in the quality and performance of these bearings that Enduro offers a two-year anti-corrosion warranty.

The 15° angular contact design requires a light preload for optimal functionality and smooth operation under load, ensuring full ball engagement and precise load distribution. If your system does not provide a built-in preload mechanism, or includes a plastic preload adjuster, this kit includes a machined aluminum preload adjuster for reliable, consistent preload setup, as well as a full spacer kit for precise chainline adjustment. When pressed into Enduro’s precision-machined cups or Torqtite threaded systems, they deliver perfect alignment and long-term stability, eliminating creaks and maintaining smooth performance. Backed by a limited lifetime warranty against wear and corrosion, XD15 represents Enduro’s highest level of performance, consistency, and longevity.

All Enduro 440C stainless steel bottom bracket and hub bearings are covered by a two-year warranty against corrosion, wear, and manufacturing defects.
Semi-annual professional servicing is required using Enduro Speed Bearing Grease (GR-011).

This is just one example of the extensive range of solutions Enduro offers for the wide variety of bottom bracket standards on the market today. Enduro provides options for nearly every configuration at multiple price and performance levels, including high-carbon chromium steel, black oxide-treated, 440C stainless steel, ceramic-hybrid, and ceramic-hybrid with XD15 super stainless steel race options. Our bearings are engineered with the deepest groove raceways possible to accommodate larger balls, and feature dual-lip seals that ride in a precision micro-groove, creating a full labyrinth seal for long life and superior protection against the elements.