Rotor Track bottom bracket
This minimalist, lightweight, low-drag bottom bracket is designed specifically for Rotor 3D track cranks.
Available with stainless steel, Grade 5 ceramic or ZERØ ceramic sealed cartridge bearings.
• CNC-machined stainless steel cups w/ sealed cartridge bearings
• 68mm English-threaded (BSA) or 70mm Italian-threaded (ITA)
• installs using Park Tool BBT-19.2
• weight: 114g
The G5 and ZERØ ceramic versions of this bottom bracket are assembled by QARV Imports in the USA using Enduro bearings and aside from the cups themselves, are not a Rotor product. However, that doesn't make them any less awesome!