No, the steel sections and interfaces between the two parts did not change. This means that steel and alloy sections of all e*thirteen TRS+ 9-46 and TRS Race 9-46 Gen 1 cassettes are interchangeable and backwards compatible. Gen 1 cassette sections are not compatible with newer Gen 2 cassette sections.
Did the steel sections of the TRS+ 9-46 cassettes change when you updated the alloy sections to the pinch bolt version?
