Originally Posted by
bikerjp
The gearing I mentioned above is from SRAM PG1070 cassettes. Although I've heard that Shimano Ultegra has quieter, smoother shifting cassette. I don't know if that's true or not but my current drivetrain is kind of noisy and was from the day I bought it. Are Sram/Shimano cassettes interchangeable?
The SRAM 11-28 cassette is 22-25-28, and the 12-28 is 21-24-28, so there isn't a 5-tooth jump from any cog to the next, if that's what you meant in your first post. My experience with SRAM cassettes has been that they start out very noisy but quiet down after a few long rides. Hope that helps!