Browsing Cranks & Bottom Brackets
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FSA Bottom Bracket Parts
Genetic Road/Track & Gravel Cranksets
Hope Mountain Cranksets
Hope Road/Track & Gravel Cranksets
Hope Spiders
Hope Crank Parts/Bolts & Caps
Hope Bottom Brackets
Interloc Racing Design Road/Track & Gravel Cranksets
Interloc Racing Design Bottom Brackets
- External BSA, English threaded bottom brackets featuring a unique self-cleaning hybrid ceramic bearing system for the ultimate in strength and durability
- Cartridge bearing system features a single ceramic ball with the remainder being steel with steel races, combining the strength of steel and the bearing life of ceramic
- Single ceramic ball bearing pulverizes contaminates, reworks and polishes the steel races with every rotation
- Offered in 24mm (Shimano, FSA, Race Face, etc) with an expandable sleeve that fits 68mm to 100mm shells
- Bearings include a 5 year warranty
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item # |
model |
spindle interface |
shell |
shell ID |
width |
color |
in stock? |
RD4121
|
Scramjet |
24mm |
BSA |
33.6mmx24tpi |
68/73/83/100mm |
black |
YES |