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Manley lightweight spring retainer (RET-TI LIGHTWEIGHT 662) is a reduced-mass valve-train component intended to cut valvetrain inertia and aid higher revving potential. Offered as a lightweight retainer option, it supports quicker engine response and improved valve control when used with compatible springs and locks. This description focuses on the part identity and practical valvetrain role without inferring unsupported specifics.
Manley Spring Retainer, RET-TI LIGHTWEIGHT 662
