BB86 press fit (road) bottom bracket shell (41 mm bore, 86.5 mm)
What a BB86 press fit (road) shell measures, which crank spindles it hosts, and the bottom bracket to buy.
Published dimensions
| Type | press fit |
|---|---|
| Shell inside diameter | 41 mm smooth press-fit bore |
| Shell width | 86.5 mm |
| Thread | none, two cartridge bearings in plastic cups press into the 41 mm bore |
| Crank spindles it hosts | 24 mm Shimano Hollowtech II and 24/22 mm SRAM GXP natively; 28.99 mm DUB via a DUB BB86 unit |
SHELL 86.5 mm
SPINDLE 24 mm Shimano Hollowtech II and 24/22 mm SRAM GXP natively; 28.99 mm DUB via a DUB BB86 unit
SPINDLE 24 mm Shimano Hollowtech II and 24/22 mm SRAM GXP natively; 28.99 mm DUB via a DUB BB86 unit
Used on: the common press-fit road standard (also called PF86 or PF41).
The 41 mm bore is sized so pressed cups hold a 24 mm-bearing (6805) cartridge, which is why BB86 is native to Shimano 24 mm cranks. The road shell is 86.5 mm wide; the MTB version at 91.5-92 mm is BB92.
Fit a crank to this shell
Shimano Hollowtech II (24 mm) in a BB86 press fit (road) shelldrops inSRAM DUB (28.99 mm) in a BB86 press fit (road) shelldrops inBB92 press fit (MTB)related shell (41 mm bore, 91.5-92 mm)
SOURCES: Wheels Manufacturing, BB Overall Width Reference Chart · Park Tool, Bottom Bracket Standards and Terminology