I have a set of Red cranks that are rusting in the ID of the spindle. I’ve only had the cranks since April. I find this very odd because I have a 2 year old set of SRAM S950 cranks that don’t show anything like this. They get similar upkeep and maintenance.
I have the same problem in the exact location with my new top of the line sram red component set. Needless to say, I am very disappointed that the inside ofthe crankset spindal has so easily rusted. I hope someone from Sram responds.