"PRESS-IN" BOTTOM BRACKET FOR MOUNTAIN BIKES

BB91, BB92, BB89.5

KCNC® 6061 ALUMINUM PRESS-IN ASSEMBLY 
WITH ENDURO®
ANGULAR CONTACT CHROMIUM STEEL BEARINGS
 
 
 
$58.00 Complete BB
(Two-Piece Aluminum Design)
 
 


PRESS-IN BB MTB, SHIMANO VERSION (HT2)

ABEC 5 ANGULAR CONTACT* CHROMIUM STEEL $58.00

Qty
 

FOR SHIMANO HOLLOWTECH 2 CRANKSETS
*BOTH BEARINGS ANGULAR CONTACT FOR 1OO% BALL ENGAGEMENT AND LONGER BEARING LIFE


PRESS-IN BB MTB, SRAM VERSION (GXP)

ABEC 5 ANGULAR CONTACT* CHROMIUM STEEL $58.00

Qty
 

FOR SRAM GXP CRANKSETS
*BOTH BEARINGS ARE ANGULAR CONTACT FOR 100% BALL ENGAGEMENT WHEN USED WITH INCLUDED WAVE WASHER. 



This press-in bottom bracket is designed for use on frames with a BB shell inside diameter of 41mm.  A 2.5mm cup spacer is included for use on frames with BB shells that are 89.5mm wide. BB shells that are 92mm wide do not require the spacer. Because manufacturing tolerances vary, on many frames no special tools will be necessary to install the cups as they will press in by hand.  On frames with a tighter fit, a mechanical means of pressing in the cups may be required.  This can either be a dedicated tool for BB86/BB92 applications, or you may improvise with a threaded rod, nuts, and fender washers. A center seal where the two-halves meet provides sealing from the inside of the frame.

These chromium steel bearings match ABEC 5 cartridges with precision Grade 10 balls.  The angular contact design ensures 100 percent ball engagement for greater strength and longer life. 

 
These Bottom Brackets do not use axle shims,
allowing us to reduce the bearing ID and use
larger balls for greater strength!