


HKS PULLEY 8Rib-100mmSKU: 12999 AK005 UPC: 4957266620991 HKS PULLEY 8Rib 100mm for 2008 2021 Subaru WRX STI This HKS 8 rib 100mm idler pulley fits 2008 2021 Subaru Impreza WRX STI models equipped with HKS GT2 supercharger kits. It maintains proper belt tension for smooth operation under high boost. Lightweight construction cuts rotational mass to support faster supercharger spool and consistent power delivery. Key Features 8 Rib Design: Matches high torque 8 rib belts to
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- Fast: 2-3 business days
- Express: 1-2 business days
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Exchange/Return Notes
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