CeramicSpeed Trek BB90 Bottom Bracket - SRAM GXP and Trek, Black Coated Bearing Apparel Brand_Tifosi Sold as pairs

Sold as pairs

Flash Modes: Daytime Flash (900 Lumens): 50 hrs

HG-X11 special asymmetric plate design for 11-speed

Outsole Nylon

making for greater stability and better weight distribution

CeramicSpeed Trek BB90 Bottom Bracket - SRAM GXP and Trek, Black Coated Bearing Apparel Brand_Tifosi Sold as pairsTrek 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