How do I know if a drivetrain part will fit my bike? September 26, 2017 16:34 We offer frame fit specifications for all SRAM drivetrain parts on the service portion of our website. Related articles My front derailleur is rubbing on my 2x drivetrain. How do I fix this? How do I make sure my chain is the proper length when installing a new chain? How do I decide what cage size to use in a 2x or 3x MTB drivetrain system? Do you sell parts directly to consumers? How do I install the SRAM RED eTap 2x11 groupset on my bicycle?