Press-fit bottom brackets live a rough life — they sit in the frame's belly taking every watt you put down while getting sprayed with road grit, sweat, and whatever the drivetrain flings off the chain. SRAM's DUB BB86.5 Bottom Bracket is built to handle that abuse with steel press-fit cups, Gutter Seal Technology to keep contamination out, and sealed cartridge bearings feeding an oversized 28.99mm DUB spindle. If you're running a Force, Rival, or Red DUB crankset in a road frame with an 86.5mm press-fit shell, this is the matching bottom bracket.

DUB is SRAM's 28.99mm axle standard , sized between the traditional 24mm Shimano/GXP spindle and the 30mm BB30 spindle. That tweener diameter lets one crankset spindle work across every SRAM bottom bracket shell standard — BSA threaded, PressFit 30, BB86, BB89.5, BB92, and BB107 — so SRAM only has to build one crank and you only have to buy the bottom bracket that matches your frame. The BB86.5 version handles road and cyclocross frames with 86.5mm press-fit shells and a 41mm shell diameter .

The steel cups press directly into the frame's carbon or aluminum bottom bracket shell — no threading, no adapter cups, no external cup interface. That means installation requires a proper press-fit tool and a frame that holds tight tolerances, but it also means fewer parts stacked between the bearing and the frame. Sealed cartridge bearings sit inside the cups, and Gutter Seal Technology adds a labyrinth-style seal at the crank interface to keep water and grit from working into the bearing. A 3mm spacer ships in the box for setups that need it.... Read More