How to Modify a 2015-2021 Subaru WRX

let’s get into it..


The Subaru WRX, spanning from 2015 to 2021, stands as a significant model in the evolution of performance sedans. Known for its distinctive rumble and turbocharged 4-cylinder engine, the WRX combines practicality, functionality, and value, appealing to a broad range of car enthusiasts. In this brief, we delve into the essentials of modifying a Subaru WRX, emphasizing the importance of smart choices to enhance performance and maintain reliability.

Looking to mod your Subaru WRX? Do it with MartiniWorks. We give a sh*t and can help you build your car the right way. 

Key Modifications for the Subaru WRX

  1. Cooling and Oil Management: Addressing the WRX’s cooling and oil systems is crucial. These components are often likened to the Achilles’ heel of the WRX, requiring careful consideration to avoid reliability issues. Oil baffle pans, catch cans, and properly lubricating systems MUST be maintained.
  1. Suspension Upgrades: Start with sway bars for an initial upgrade. If budget allows, consider moving to coilovers like BC Racing or Fortune Auto 510’s for improved handling.
    1. Shop Subaru WRX Mods here! -> https://martiniworks.com/?s=WRX
  1. Wheel Selection: Sport design wheels with convex spokes are recommended for adequate brake clearance. Choices range from RPF1’s, NT03’s, to more upscale options like Work VS-TX’s. Our size recommendations are listed in the video above!
  1. The Tune Zone: Any modifications affecting air, fuel, or exhaust systems require a professional tune. This is essential to avoid damaging the engine and to ensure optimal performance.
  1. Maintenance Prioritization: The foundation of a successful modification journey is rigorous maintenance. Keeping the engine and other systems in top condition is critical before undertaking more extensive modifications.
  1. Aesthetics and Functionality: A balanced approach to aesthetics and functionality is advisable. While a set of attractive wheels and a catback exhaust can enhance the car’s appeal, they should be complemented with practical modifications that improve performance.


Modifying a Subaru WRX requires a balance of enthusiasm and prudence. Starting with fundamental maintenance and moving through thoughtful upgrades ensures a reliable and exhilarating driving experience. As with any performance vehicle, the key is to blend personal taste with technical know-how, creating a WRX that is both enjoyable to drive and resilient.

Alex Martinez

My name is Alex, or Alex Martini (Alex.Martini__) and I love building unreliable cars. From track, road, drag and drift, there really isn't a motorsport I love. PS if you're reading this, just know that we've got some WILD builds coming for MartiniWorks that we're really excited to share with you :)