Perrin Lightweight Crank Pulley | Multiple Subaru Fitments (PSP-ENG-101)Perrin Performance Lightweight Crank Pulley Part #: PSP ENG 101RD Overview The Perrin Lightweight Crank Pulley is a high performance upgrade designed for Subaru enthusiasts seeking to optimize engine responsiveness and reliability. Crafted from durable materials, this pulley replaces the stock component to reduce rotational mass, helping your engine spin more freely and respond more quickly to throttle inputs. It is ideal for drivers looking to
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