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Subaru 2015+ WRX Kozmic K300 Package

Kozmic Motorsports has spent extensive time testing the best performance parts on the market over countless hours on the dyno and thousands of street driven miles to bring you some of the best packages on the market. We have thoroughly tested these packages to be both safe and reliable for the every day daily driver, as well as making great power for the avid enthusiast. 

Please note ALL of these packages will require tuning with purchase, see the drop down menus on the product purchase pages to select tuning options.

Our K300 package is an entry level pacakge to start the process of opening up your 2015+ WRX to what most consider how it should come from the factory. We start with a completely stock car and focus on the basic modifications with the largest gain per dollar. If you already have modifications, we can complete your vehicle to the K300 Package with ease, just give us a call. When choosing the parts for our power packages many concerns come into play leading us to a select few options we offer.

  • Fitment - 100% OEM Fitment, no modification required. No rubbing or contacting other parts in the area, etc.

  • Manufacturing Quality and Warranty - Amazing part quality and manufacturing techniques, with outstanding warranties on the entire system.



One of the first mods to the car is opening up the intake tract before the turbocharger. The OEM air filter and air box assembly becomes a large restriction once you reach ~40hp over OEM output. For this reason, we go ahead and change the intake now. Both intake options we prefer can be used on the OEM turbocharger as well as all OEM replacements (FP Blue, etc) leaving room to grow within the same part through many stages of modification. Our preferred intakes are the Cobb Tuning Intake System and the ETS Intake System (with airbox).

  • Important Note: Air Box - You will see both options have a comprehensive air box design that keep the radiant heat off of the intake filter as well as the heat coming directly from the radiator fans that can commonly cause a "bouncy" idle.

Cobb Tuning 2015+ Subau WRX Intake
ETS 2015+ Subaru WRX Intake


Exhaust is something many owners commonly look forward to with adding some "rumble" to the tone. Our K300 package offers 2 optional complete turbo back exhausts - Cobb Tuning Turboback Exhaust -or- ETS Turboback Exhaust. Both feature high flow catalytic converters, 3" Stainless Mandrel Bent Tubing with TIG Welded Joints and Flanges. 

  • Important Note: Catalytic Converter - Kozmic prefers the use of high flow cats for both the purpose of emissions control as well as reducing the possibility of boost creep that commonly occurs when not having a cat.


Other Parts

  • The Cobb Tuning Boost Controller helps us keep accurate and precise boost control throughout the power band and also allows more precise boost control in cooler climates. The Cobb unit is our preferred brand here due to the superior quality of the silicone hoses included.

  • IAG Competition AOS (Air Oil Seperator) helps keep the intake tract clean and oil free to help prevent build up on the valves that can lead to power loss, increased knock feedback and reduced power.

  • Cobb Tuning Accessport is the obvious choice to handle the tuning side of the power package. The AP also allows the driver to view data in real time as well as send logs to our tuning staff should any concerns arise.

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