The BB90 Madone was designed to be used in high-end Trek bicycle frames (2008 and newer) and some Gary Fisher bicycles. This bottom bracket is an internal, bearings only system so it fits completely within the frame shell. The bearings are compatible with a 24mm crankset spindle such as Shimano and FSA; and can be used with an adapter for SRAM 22/24mm cranksets (select SRAM crank above).
There are 3 different bearing choices to best meet your needs:
- Standard Bearings: Use for road bikes in dry/no salt environments.
- Full Stainless Steel Bearings: Use for extreme distance riding (>200miles/week), BMX, MTN, Cycle cross, and other varying conditions.
- Full Stainless Steel Bearings with CX Seals: The CX seal is for riding conditions where water, dust, and debris can get into the bearing and degrade it prematurely. Use for MTN, BMX, Cycle Cross, or other wet and dirty conditions. NOTE: This is not for timed road biking as the extra seal slightly increases wattage.
NOTE: For 22/24mm SRAM/Truvativ cranks you will need to select the SRAM option in the crank menu.
NOTE: For BMX cranks that use a 19mm spindle, road cranks with a 19mm spindle, and the FSA Omega you will need our 19mm bushing kit which is sold separately.
This product ships with (2) bearings, (1) wave washer, and a 6.5cc sachet of Crystal Grease for a smooth installation. Order more grease, if needed, via our website.