evo.com | Wheels Manufacturing Bottom Bracket > The Wheels Manufacturing BSA Shimano Bottom Bracket is easy to install and features enduro bearings and silicone seals for the best possible performance. One 1.8mm Aluminum BB Cup Spacers for Use with 68mm Wide BB Shell Two Enduro Silicone Dust Seals Compatible with the following Bottom Bracket Standards: ISO/English or BSA Threaded (1.37 in x 24 TPI) / 73mm BB Shell Width One 2.5mm Aluminum BB Cup Spacers for Use with 68mm Wide BB Shell Compatible with The Following Cranksets with 24mm Spindle Diameter Shimano HollowTech II / FSA / RaceFace EXI, X-Type, MegaExo / Rotor 3D, Agilis | Wheels Manufacturing BSA Shimano Bottom Bracket 2023 - 24mm, 68/73mm in Black Size 24mm 68/73mm | Aluminum