Hmm well I'm currently running a carbonite coated 2.6 pulley. I have now for at least 5 years. Thought Bob knew I've been running that.It was Carbinite I believe, they basically just make the surface coarse like sandpaper but Griptec has nice symmetrical grooves. Had some Griptec pulleys on my E55, very nice and wanted them for my Cobra ever since.
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