DUB BB system(29 spindle)
PT-6635U
For SRAM DUB BB386
PF BB386 frame
Forged alloy & CNC machined cups
Alloy shell W/double o ring seals
2 pcs Sealed cartridge bearings
Anodized color available
DUB bb system for 28.99mm spindle
PT-6635U Dowland drawing