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The ATI 8.53-inch aluminum damper is an 11- and 6-groove unit specified for LS9 and Y-body ZR1 applications, featuring a 14% overall diameter increase to suit high-displacement Corvette setups. Designed to provide correct pulley spacing and crank harmonic control for factory-style builds or performance replacements, it matches accessory drive requirements for LS9-equipped vehicles.
ATI Damper - 8.53in - Alum - 11 & 6 Grv - LS9 - Y Body - 14 Percent OD - Zr1
