• COBB NexGen Stage 1 to Stage 2+ FF Power Package w/ Redline CF Intake | Subaru STI (15-21) (SUB004NG2S2FF-RED-S1-UP)
  • COBB NexGen Stage 1 to Stage 2+ FF Power Package w/ Redline CF Intake | Subaru STI (15-21) (SUB004NG2S2FF-RED-S1-UP)
  • COBB NexGen Stage 1 to Stage 2+ FF Power Package w/ Redline CF Intake | Subaru STI (15-21) (SUB004NG2S2FF-RED-S1-UP)
  • COBB NexGen Stage 1 to Stage 2+ FF Power Package w/ Redline CF Intake | Subaru STI (15-21) (SUB004NG2S2FF-RED-S1-UP)
  • COBB NexGen Stage 1 to Stage 2+ FF Power Package w/ Redline CF Intake | Subaru STI (15-21) (SUB004NG2S2FF-RED-S1-UP)
  • COBB NexGen Stage 1 to Stage 2+ FF Power Package w/ Redline CF Intake | Subaru STI (15-21) (SUB004NG2S2FF-RED-S1-UP)
  • COBB NexGen Stage 1 to Stage 2+ FF Power Package w/ Redline CF Intake | Subaru STI (15-21) (SUB004NG2S2FF-RED-S1-UP)
  • COBB NexGen Stage 1 to Stage 2+ FF Power Package w/ Redline CF Intake | Subaru STI (15-21) (SUB004NG2S2FF-RED-S1-UP)
  • COBB NexGen Stage 1 to Stage 2+ FF Power Package w/ Redline CF Intake | Subaru STI (15-21) (SUB004NG2S2FF-RED-S1-UP)
  • COBB NexGen Stage 1 to Stage 2+ FF Power Package w/ Redline CF Intake | Subaru STI (15-21) (SUB004NG2S2FF-RED-S1-UP)
  • COBB NexGen Stage 1 to Stage 2+ FF Power Package w/ Redline CF Intake | Subaru STI (15-21) (SUB004NG2S2FF-RED-S1-UP)
  • COBB NexGen Stage 1 to Stage 2+ FF Power Package w/ Redline CF Intake | Subaru STI (15-21) (SUB004NG2S2FF-RED-S1-UP)
  • COBB NexGen Stage 1 to Stage 2+ FF Power Package w/ Redline CF Intake | Subaru STI (15-21) (SUB004NG2S2FF-RED-S1-UP)
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COBB NexGen Stage 1 to Stage 2+ FF Power Package w/ Redline CF Intake | Subaru STI (15-21) (SUB004NG2S2FF-RED-S1-UP)

COBB NexGen Stage 1 to Stage 2+ FF Power Package w/ Redline CF Intake | Subaru STI (15-21) (SUB004NG2S2FF-RED-S1-UP)

SUB004NG2S2FF-RED-S1-UP

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$4,025.00 USD
$4,025.00 USD $4,025.00 USD
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The COBB NexGen Stage 1 to Stage 2+ Flex Fuel Power Package Upgrade with Redline Carbon Fiber Intake is a comprehensive performance enhancement kit designed specifically for the 2015–2021 Subaru WRX STI. This upgrade package builds upon the Stage 1 Power Package, delivering increased power and efficiency through a combination of high-quality components. Key features include a Redline Carbon Fiber Intake for improved airflow, a Silicone Turbo Inlet V2, and a Throttle Body Coupler to optimize turbo response. The kit also incorporates upgraded spark plugs, top feed 1050cc fuel injectors, a high flow fuel pump, and a fuel pressure regulator with a complete fuel rail line kit. Additionally, it includes the NexGen Flex Fuel Ethanol Sensor Kit and Fuel Pressure Sensor Kit, allowing for precise fuel management and compatibility with flex fuel blends. The package is engineered for durability and enhanced engine performance under demanding conditions.

This upgrade package is designed exclusively for the 2015–2021 Subaru WRX STI, serving as a direct enhancement for vehicles already equipped with the COBB Stage 1 Power Package. Installation involves replacing and upgrading existing components with bolt-on parts that integrate seamlessly with the factory setup. The kit supports flex fuel applications, making it suitable for street, track, and enthusiast driving where ethanol blends are used. Included components ensure a complete fuel system upgrade, improving fuel delivery and engine tuning capabilities. This package is ideal for drivers seeking a reliable and efficient power increase while maintaining compatibility with their existing COBB Stage 1 setup.

Overview

COBB Power Package Upgrade

Fitment: 2015-2021 Subaru WRX STI

Part #: SUB004NG2S2FF-RED-S1-UP

Overview

The COBB NexGen Stage 1 to Stage 2 + Flex Fuel Power Package Upgrade is a comprehensive performance drivetrain kit designed specifically for the 2015-2021 Subaru WRX STI. This upgrade is intended for enthusiasts who already own the COBB Stage 1 Power Package and want to elevate their vehicle’s power and fueling capabilities with advanced components. The package combines high-quality parts that support enhanced airflow, fuel delivery, and engine management flexibility, particularly for flex fuel applications.

By integrating the Redline Carbon Fiber Intake and a suite of fuel system upgrades, this package helps optimize engine response and efficiency. It is ideal for drivers seeking a reliable and technically advanced upgrade that supports higher power levels while maintaining drivability and fuel system precision.

Key Features

This power package upgrade includes a carefully selected set of components designed to work together for improved performance and fuel management:

  • Redline Carbon Fiber Intake for lightweight, efficient airflow
  • Silicone Turbo Inlet V2 and Throttle Body Coupler to enhance turbo response and throttle connection
  • High-performance Spark Plugs for reliable ignition under increased load
  • Top Feed 1050x Fuel Injectors and High Flow Fuel Pump to support elevated fuel demands
  • Fuel Pressure Regulator, Fuel Rail Line Kit, and Fuel Rails for precise fuel delivery and system integrity
  • NexGen Flex Fuel Ethanol Sensor Kit and Fuel Pressure Sensor Kit for accurate flex fuel tuning and monitoring
  • COBB Vehicle Badge included as a finishing touch

Installation & Fitment

This upgrade package is designed for direct fitment on 2015-2021 Subaru WRX STI models. Installation requires familiarity with fuel system components and intake modifications. It is recommended to verify fitment against your vehicle’s specifications and consult professional installation resources if needed to ensure proper integration and safety.

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