CeramicSpeed Trek BB90 Bottom Bracket - SRAM GXP and Trek, Black Coated Bearing Shimano Tiagra JCOB REAR HYDRATION MOUNT (RHS)

JCOB REAR HYDRATION MOUNT (RHS) READY WEIGHT 366 g SEAT RAIL HOLLOW CHRO-MOLY REAR WIDTH 135 mm FRONT WIDTH 55 mm LENGTH 260 mm RELIEF CHANNEL  15 mm X 150 mm RAIL LENGTH 105 mm

5mm wide and mate most cranks with a 30mm spindle to that standard

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

CeramicSpeed Trek BB90 Bottom Bracket - SRAM GXP and Trek, Black Coated Bearing Shimano Tiagra JCOB REAR HYDRATION MOUNT (RHS)Trek 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