Originally Posted by
Jeff Wills
I have found that the cassettes that have the larger cogs mounted on aluminum "carriers" can get noisier with time. I think it's because the carrier moves around a bit on the cassette body and when it shifts it makes a crunchy ping.
The cassette should not be moving around on the freehub body. If it is, the lockring isn't tight enough. I doubt most people torque to the full 40 N*m.