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The HKS BCD piston kit for the G16E (HC-TT STEP3 S3 D87.5) is a multi-piece piston set specified with an 87.5 mm diameter, offered for engine builds or replacements requiring this kit. Marketed under HKS's STEP3 naming, the kit targets customers assembling or refreshing compatible 4-cylinder engines where the G16E piston specification is required, supplying the pistons needed for proper cylinder fit and clearance for that application.
HKS BCD Piston Kit G16E HC-TT STEP3 S3 D87.5
