FREE SHIPPING OFFER


KCNC®/RWC
SPECIALIZED "OSBB" TO "HT2"
CONVERTER BOTTOM BRACKET
FOR ROAD BIKE APPLICATIONS
WITH VARIOUS ENDURO BEARING OPTIONS
 
 
 


ANODIZED BLACK W/ANGULAR CONTACT STEEL BEARINGS $78

ANODIZED RED W/ANGULAR CONTACT STEEL BEARINGS $78

ANODIZED GOLD W/ANGULAR CONTACT STEEL BEARINGS $78

ANODIZED BLACK W/ANGULAR CONTACT 440C STAINLESS BEARINGS $98

ANODIZED RED W/ANGULAR CONTACT 440C STAINLESS BEARINGS $98

ANODIZED GOLD W/ANGULAR CONTACT 440C STAINLESS BEARINGS $98

ANODIZED BLACK W/ANGULAR CONTACT CERAMIC HYBRID BEARINGS $136

ANODIZED RED W/ANGULAR CONTACT CERAMIC HYBRID BEARINGS $136

ANODIZED GOLD W/ANGULAR CONTACT CERAMIC HYBRID BEARINGS $136





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

We are expanding our Angular Contact ENDURO bearing options based on the superior performance and longevity of Angular Contact Bearings when used in bottom bracket applications. 

 
 

 
Installation
Completely remove old bottom bracket and any cups, adapters, and residual grease or Loctite from the carbon BB shell.
Grease and press in the Delrin bushings.
Grease the KCNC cups and press them into the Delrin Bushings.  
To properly tighten these threaded bearing cups, two Hollowtech II compatible tools will be required.
KCNC recommends tightening the cups to 35 Nm (300 inch-lbs) of torque.
Complete installation instructions included with Bottom Bracket


 

Click to follow us on Facebook!