Underneath the custom
machined and anodized dust covers lie Enduro ZERO Series ceramic hyrid bearings. USA-made Grade 3 ceramic balls are
housed in highly polished, cryogenically treated SAE52100 chromium steel races, sealed with double-lipped non-contact
silicone seals, and lubricated with Realube Bearing Compound for the ultimate in friction reduction.
ZERO pulleys weigh in at 9 grams per pair.
Ranked the number one pulley by independent