I have not used the FHR piston. They look good

I have used KB piston in previous builds, I have not been let down.
FHR series pistons from KB Piston.
KB Pistons has introduced a new forging line--the FHR (Forged Head Relief) Series. This new line features VMS 75 alloy, true arc-style lock rings, broached pin holes, breakthrough oil returns, and 5/64 in. ring packs--all designed to be easy on your wallet! In addition, most flat-top and dish applications are available in an offset pin design, which will help to quiet those street motors.