TurboXS 2015-2021 WRX Front Pipe Hardware is a must when you are replacing the Front Pipe with a higher flowing unit. This kit includes the 4 studs to replace the turbine side studs that notoriously get stuck or even strip when removed. Our studs are made from High quality Stainless Steel. Also included are the nuts and bolts to secure the Front Pipe which are also Zinc coated for durability. Key Features: Stainless Steel Studs Zinc Coating for Durability