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Ships within 48 hours · Estimated delivery Sep 13 - Sep 18
They are shot peened and 100% magnafluxed and use either 3/8in ARP 2000 fasteners or optional super strength ARP Custom Age 625+ cap fasteners
plus maximum airflow for superb performance results
Weight: 12
The OEM mounts are made out of very soft material and have voids in them that cause flex
Manley 99.5mm STD Bore, 9.8 Comp. Pistons Subaru WRX 2006-2014 / STI 2004-2021 vendor_Stop Tech They are shot peened andPart #: 612100C 4 Manley forged and dished pistons for the EJ257 are machined of high strength 2618 material. Each design is lightweight yet robust enough to deliver long service life. Round wire locks, tool steel wrist pins and piston rings are included with every set at no additional charge. A proprietary multi step top ring groove machining process assures optimum control of the groove's size, geometry, flatness and finish. Precise pinhole