A Focus Mares cyclocross frame uses a BB86 press fit (road) bottom bracket shell (41 mm bore, 86.5 mm). The dimensions, which cranks fit, and the exact bottom bracket to buy.
Updated 05 September 2026.
What bottom bracket does a Focus Mares cyclocross use?
The bottom bracket shell standard on a Focus Mares cyclocross, and how to pick the right BB.
| Frame | Focus Mares cyclocross |
|---|---|
| Shell standard | BB86 press fit (road) (41 mm bore, 86.5 mm) |
| Shell inside diameter | 41 mm smooth press-fit bore |
| Shell width | 86.5 mm |
SPINDLE see table
The Focus Mares cyclocross uses a BB86 press fit (road) bottom bracket shell (41 mm bore, 86.5 mm), a 41 mm smooth press-fit bore, 86.5 mm wide.
It is a press-fit shell, so bearings or cups press into the 41 mm smooth press-fit bore. Match the shell width as well as the bore, because a shorter unit will not preload the crank across a wider shell.
SOURCES: BikeRadar, The complete guide to bottom bracket standards · Wheels Manufacturing, BB Overall Width Reference Chart · Park Tool, Bottom Bracket Standards and Terminology
Questions and answers
What bottom bracket does a Focus Mares cyclocross use?
A Focus Mares cyclocross frame uses a BB86 press fit (road) bottom bracket shell (41 mm bore, 86.5 mm).