ALLOWS PRESS-FIT BB92 AND BB86 SHELLS TO
RUN BB30 CRANK SETS
FOR BIKES DESIGNED TO RUN BB86/BB92/BB91/BB71-41A BOTTOM BRACKETS
(41MM INSIDE DIAMETER SMOOTH BORE BB SHELL)
with ENDURO® DOUBLE ROW STAINLESS STEEL
COMPLETE BOTTOM BRACKET:
2 pcs FLANGED DOUBLE-ROW BEARINGS 440C STAINLESS
2 pcs AUXILIARY SILICONE
ASSORTED NYLON SPINDLE SPACERS
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BB92 X BB30 BOTTOM BRACKET, DOUBLE-ROW FLANGED ENDURO BEARINGS, $80.00
Fitting a 30mm spindle into a
"BB92" ("BB86" in road applications) shell does not leave much room for the bearings--a challenge
that has limited the use of BB30 cranks in such applications.
By making outer race of these bearings into the "cup" and adding a second row
of ball bearings, previous limitations have been overcome. The result
is a strong, smooth, and corrosion resistant bottom bracket. The races and balls are 440C Stainless Steel.
Please note that
this adapter bottom bracket is designed for use with BB92 bottom bracket shells with
a press-fit ID of 41mm. Since BB92 bottom bracket shells
are 92mm wide, you must use a BB30 crankset with a long enough spindle, such as the Rotor 3D+ crankset.