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The COMP Cams 3/8" Hi‑Tech polylock is a race-focused locking nut designed for use with 3/8" Ultra Pro Magnum and Ultra Pro Magnum XD rockers. Built to perform in high-end race applications, these polylocks are precision ground and tapered to reduce runout and strengthen the locking area, offering a reliable locking solution for compatible COMP stud rocker assemblies.
COMP Cams Poly Lock 3/8 Hi-Tech
