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Horizontal Louvers: The louvers were added to the roto-molded housing to increase the cold air to the air filter
PERRIN Gurney Flap for OEM Short Spoiler - 2015-2021 Subaru WRX / STI
we recommend modifying an add-a-fuse plug
ensuring enhanced running stability during high-speed driving
Adjust Peak Boost
Manley 75mm DE-STROKED 100mm +.5mm Bore 9.8:1 Dish Piston Set w/ Rings - 2004-2021 Subaru STi (EJ257) pdm_front-wind-splitter Horizontal Louvers: The louvers were2618 Alloy Forgings: We use domestic 2618 alloy forgings, ensuring superior strength and performance. Chrome Moly Wrist Pins: Premium Chrome Moly wrist pins come standard with our Standard Series Pistons. For select SKUs, we offer wrist pin upgrades to 9310 and Turbo Tuff DLC alloys, providing additional durability. Exacting Ring Lands and Grooves: We adhere to strict standards for piston ring lands and grooves, resulting in enhanced ring seal and