Cane Creek Hellbender 70 Bottom Bracket - English for 24mm Spindle Silver Weight-650g The EX1 drive train was

The EX1 drive train was designed specifically for the demands of electric-assist mountain bikes: a wide gear range with bigger jumps between gears and sturdy components to handle higher torque loads

use PX-9040 for English 68/73mm

The special shape reduces windage by minimizing exposed surfaces regardless of weather conditions head-tilt position and inflow angle

The combination of polycarbonate (PC) and polystyrene (EPS) gives it a very light appearance with a weight of just 250 g

Cane Creek Hellbender 70 Bottom Bracket - English for 24mm Spindle Silver Weight-650g The EX1 drive train wasHigh performance bottom bracket Machined from 6061 T6 aluminum with anodized black finish Premium 440C stainless steel bearings For installation removal of notched cup BBs, use 12 notch for 46mm outside diameter BB tool, PK5832 TECH SPECS model Hellbender 70 spindle interface 24mm shell BSA shell ID 33. 6mmx24tpi width 68 73mm color silver