Proform Rocker Arm Aluminum Stud Girdles - For Use w/ 7/16" Stud RS00100310 adjustable from 3-20 PSI

adjustable from 3-20 PSI

Easily Opened for Shock and Spring Adjustments

Progressive Throttle Pulley And Double Return Spring

Rear twist-on ring mount design makes mounting simple

Exhaust Cutout Motor

Proform Rocker Arm Aluminum Stud Girdles - For Use w/ 7/16" Stud RS00100310 adjustable from 3-20 PSIProform Rocker Arm Aluminum Stud Girdles 66951 For Use w 7 16" Stud Reduce Flex And Part Breakage Increase Valve Train Rigidity Help Minimize Energy Loss Comes w Aluminum Stabilizers And Poly Locks 2 Pieces Per Set Applications include: Bel Air, Biscayne, Blazer, Blazer K5, Brookwood, C10 Pickup, C10 Suburban, C15 Pickup, C15 Suburban, C15 C1500 Pickup, C15 C1500 Suburban, C1500 Pickup, C1500 Suburban, C20 Pickup, C20 Suburban, C25 Pickup, C25