The best polylock for high end race applications, these Hi-Tech polylocks are designed for 1/2" Ultra Pro Magnum and Ultra Pro Magnum XD rockers.
Hi-Tech Polylock Set for 1/2" Stud Ultra Pro Magnum Rockers
Polylocks 1/2 Stud Ultra Pro Mag Rockers
4657-16 - Poly Locks, 1/2" Hi-Tech Set
COMP Cams Poly Locks 1/2in Hi-Tech Set
Engine Rocker Arm Adjusting Screw
Poly Locks, 1/2" Hi-Tech Set
RockerArm Adjt Screw
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