CeramicSpeed BB90 Bottom Bracket - 24mm Spindle, Black Coated Bearring Nutrition_Capsules Rear Derailleur: microSHIFT RD-M21L

Rear Derailleur: microSHIFT RD-M21L

Train hard

Gluten free

The mechanisms are sealed and cup & cone bearings are serviceable for user-friendly durability

CeramicSpeed BB90 Bottom Bracket - 24mm Spindle, Black Coated Bearring Nutrition_Capsules Rear Derailleur: microSHIFT RD-M21LBB90 is the Trek oversized bottom bracket standard and is only found on Trek road bikes. The shell is 90. 5mm wide and is designed to work with 24mm spindles and road cranks and have the bearings inside the shell. The CeramicSpeed Bearings come as two bearings, which are then pressed into the frame. Those two bearings consist of either CeramicSpeed Standard or Coated Bearings. Both feature super smooth, super round CeramicSpeed Balls contained in