Cobb Stage 1 to NexGen Stage 2 Flex Fuel Power Package Redline Subaru STI 15-21 | SUB004NG2S2FF-RED-S1-UP FocusST_2013-2018 Check engine bay for existence

Check engine bay for existence of OE in-line filter

SC7402 Bore STD

Part #: 247090

Endtanks Cast Aluminum

You will not find a finer piston for your generation 2 4G63

Cobb Stage 1 to NexGen Stage 2 Flex Fuel Power Package Redline Subaru STI 15-21 | SUB004NG2S2FF-RED-S1-UP FocusST_2013-2018 Check engine bay for existenceFitment Information: 2015 2021 Subaru STI 2018 Subaru STI Type RA Package Includes: Redline Carbon Fiber Intake Silicone Turbo Inlet V2 Throttle Body Coupler Spark Plugs Top Feed 1050x Fuel Injectors AEM 340LPH High Flow Fuel Pump E85 Compatible Fuel Pressure Regulator for Fuel Rail Kit Fuel Rail Line Kit Fuel Rails NexGen Flex Fuel Ethanol Sensor Kit Fuel Pressure Sensor Kit (5 Pin) COBB Vehicle Badge Features: The COBB Stage 1 to NexGen Stage 2+