How do I know if a drivetrain part will fit my bike? SRAM USA February 15, 2018 19:46 Updated We offer frame fit specifications for all SRAM drivetrain parts on the service portion of our website. Related articles How do I decide what cage size to use in a 2x or 3x MTB drivetrain system? How do I make sure my chain is the proper length when installing a new chain? Do you sell parts directly to consumers? My front derailleur is rubbing on my 2x drivetrain. How do I fix this? I want to create my own ratio cassette. Do you offer cassette cogs separately? Comments 0 comments Article is closed for comments.