Ok, so I've swapped my 53/39 Shimano crankset for a 50/34 SRAM Rival
2 piece crankset. The Shammino adjustable BB had a large external metal
disc on the drive side. (behind lockring) I believe this disc piece is to help
protect my carbon frame in the event the chain falls off the inner chainring.
Is that correct?
Should I re-use this disc and install on drive side (if wide enough) behind
the GXP external cup of my SRAM Rival crankset? It is a very thin piece of