ALLOWS THE USE OF SHIMANO HT2 (DURA ACE, ULTEGRA, 105, ETC.) OUTBOARD CRANK SETS ON SPECIALIZED CARBON FRAMES WITH THE "OSBB" STANDARD!

EQUIPPED WITH ENDURO ANGULAR CONTACT CHROMIUM STEEL BEARINGS.

-For ROAD BIKE applications
-Not for use on "triple" cranksets
-Auxiliary seals/shields included
-For OSBB standard (46mm BB Shell I.D. X 61mm Wide)
-for Hollowtech 2 cranksets only--NOT for GXP (SRAM)

At RWC, we have paired the machining precision of KCNC with Enduro Bearings to bring you the best OSBB to HT2 adapters available. The KCNC design offers several advantages, including optimum bearing placement on the crank set spindle. The double O-ring seals on the "cups" ensure a positive, creak-free fit regardless of BB shell tolerance variations. Because the two halves thread together, when the bottom bracket is properly torqued, it becomes locked into place within the bottom bracket shell. The aluminum body does not flex or distort under load. This also forms a solid barrier from moisture that may be trapped in the bottom bracket shell.

Specialized carbon road frames with Specialized's own "OSBB" standard are a unique adaptation of the "PF30" standard in that THEY ARE ONLY 61mm WIDE (standard PF30 road width is 68mm). For this reason, this special bottom bracket assembly includes special bushings for the bottom bracket shell. This kit contains everything you need to run Shimano road cranks (Dura Ace, Ultegra, 105, etc.) on your Specialized Carbon OSBB frame.