Originally Posted by philosophico

After 2 failed 65mm pulley's first 1 lasting 2 years started then started to rattle like Velocialbstract and the other lasting literally less than a month with the snout of the pulley literally separating. I went with the 178 from Needswings, in hindsight if I had to do it all over again I would have just done the 178 from the start.

The downside, the SC pulley is much easier to change as with the 178 I had to use an air impact wrench to take mine off, they say you can do it manually with a breaker bar but I gave up on that idea 5 mins into trying. Hit it with my cheap craftmans air impact and this special 28mm impact socket and it came off in 1 min.