OUTBOARD BOTTOM BRACKETS
Stainless Steel Outboard Bottom Bracket Cups
We manufacture our Stainless Steel Outboard Bottom Bracket (OBB) Cups for integrated spindle and crank systems. These cups are available in the following thread specifications: British, Italian, Raleigh Super Corsa, French, Swiss, and Chater Lea.
We make our SS OBBs in all threadings to enable those with older, classic frames to adapt to current crank technology.
A threadless (press fit) OBB cup set is available for those that wish to convert older Klein frames that used the pressed-in 6003 bearing bottom bracket shells. Other frames that use a press fit system with 6003 bearings can utilize this threadless OBB as well.
SRAM / TRUATIV Adaptor
Truvative and SRAM cranks use a unique bearing on the non-drive side. We have manufactured an adaptor that enables one to use a standard OBB cup with Truvative and SRAM cranks (middle image). At this time Campagnolo cranks are not currently compatible. Campagnolo uses a center bearing on their crankset, this interferes with our bottom bracket.
Replacement Bearing Dust Covers
We offer two sizes of replacement outboard bottom bracket bearing dust covers. We have a standard dust cover which is good for everything except Shimano and a medium dust cover which is good for newer Shimano (Dura Ace, XTR) parts.