Manley 100mm (+.5mm) Overbore Pistons Subaru WRX 2006-2014 / STI 2004-2021 | 612005C-4 universal heat-treating process for unparalleled performance

heat-treating process for unparalleled performance

Improves throttle response and reduces turbo lag

Brian Crower's EJ205 stroker kits utilize your choice of four different BC premium billet connecting rods

50 which remains constant at any speed

Speaking of power

Manley 100mm (+.5mm) Overbore Pistons Subaru WRX 2006-2014 / STI 2004-2021 | 612005C-4 universal heat-treating process for unparalleled performancePart #: 612005C 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