CeramicSpeed Trek BB90 Bottom Bracket - SRAM GXP and Trek, Black Coated Bearing Shimano Tiagra 5mm wide and is designed

5mm wide and is designed to work with 24mm spindles and road cranks and have the bearings inside the shell

The Boa® IP1-S dial allows you to microadjust your fit with the twist of a knob

Go fast or go home with TYR Nest Pro Adult Goggles

No parabens

Water resistant seat padding

CeramicSpeed Trek BB90 Bottom Bracket - SRAM GXP and Trek, Black Coated Bearing Shimano Tiagra 5mm wide and is designedTrek developed their own bb standard to optimize their frame designs. BB90 has a 90. 5mm shell width and 37mm inner diameter and is designed so that the bearings of external cups can hide within the frame. The CeramicSpeed kit comes as two bearings, which are then pressed into the frame. Those two bearings consist of either CeramicSpeed Standard or Coated Bearings. Both features super smooth, super round CeramicSpeed balls rotating in hardened steel