Manley Performance Platinum Series Piston Set 99.75mm (9.8:1) - Subaru WRX 2006-2014 / STi 2004-2021 (+Multiple Fitments) BMC but sacrifices flow and often

but sacrifices flow and often times fitment

Maintains very high flow even at boosted fuel pressures

JE's piston set includes

Mimics Factory AFR - Safest intake on the market * Installed easily without bumper removal - Don't ruin your bumper fitment like other intakes

Manley Performance Platinum Series Piston Set 99.75mm (9.8:1) - Subaru WRX 2006-2014 / STi 2004-2021 (+Multiple Fitments) BMC but sacrifices flow and oftenManley 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 machining results in an