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OPGI Price $78.95
Cast aluminum pulleys are OK and billet aluminum pulleys are good, but the ultimate is Zoops forged aluminum billet pulleys. The forged billet pulleys are 400% stronger than cast versions and are 50% stronger than billet ones. Zoops CNC-machines each 6061-T6 aluminum pulley to exacting tolerances and a perfect balance and then heat-treats them—which hardens and strengthens the pulley preventing fatigue cracking and warping. There are several pulley configurations for small-block and big-blocks, and they come with a machined or show-polished finish. Comes complete with all of the mounting hardware.
FP – Forged polished finish
FM – Forged machined finish
Part #: CH25173