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Your cart is empty.Proform poly locks for roller-rocker arms with 7/16" studs. Fits most extruded aluminum rocker arms, 16 per package.
Jerry s
Reviewed in the United States on September 6, 2024
We’re ok , had to retap the threads . We’re very tight . Worked better after threads cleaned up
Kevin
Reviewed in Canada on June 6, 2023
These poly locks are too large in their diameter to fit comp ultra pro magnum rockers or aluminum rockers. The threads were poorly cut, one of the lock screws stripped, just plain junk. I ad to machine them for length due to my valve cover which was my own problem. i also had to machine the barrell diameter which was too large and thats their problem. Spend a couple more bucks and get something decent.
Olyvier Tanguay daigle
Reviewed in Canada on October 26, 2022
threads were damaged
Ken Frazier
Reviewed in the United States on June 23, 2008
This is a poor off shore attempt to copy yet another US designed product in use for decades. Too bad they forgot to measure the inside diameter of a quality roller rocker arm like a Comp Cams stainless steel model. If they would have, then they would have turned down the diameter of the end that holds down the pivot to the correct size to go into it. As they are, they don't work and won't allow proper valve adjustment unless modified to fit. I recommend buying a quality US made brand.
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