The Subaru Impreza STi is a great value performance car with pure motorsport herritage. At MRT we are passionate about building on its strengths and overcoming its weaknesses.

We have owned several as part of our research and development program and our decades of experience allows us to guide you to get the best from your budget.

Select your vehicle from the list below for detailed MRT Power Kit information and Dyno data.

STI

MRT XA POWER KIT

AVAILABLE | 15KW More Power | 15% More Torque

MRT XB POWER KIT

AVAILABLE | 40KW More Power | 32% More Torque

MRT XC POWER KIT

CUSTOM OPTIONS AVAILABLE - CALL US

As these cars are now getting on in years and unmodified examples are becoming more difficult to find, results can vary from car to car. Therefore we don’t have a specific power kit document available for this vehicle.

If you’re interested in a power kit for your MY99-00 WRX STI, contact us on (02) 9767-4545 so we can tailor a package to suit your individual vehicle and needs.

MRT XA POWER KIT

AVAILABLE | 20KW More Power | 15% More Torque

MRT XB POWER KIT

AVAILABLE | 40KW More Power | 28% More Torque

MRT XC POWER KIT

CUSTOM OPTIONS AVAILABLE - CALL US

Download the MRT Performance Power Kit Document below for Dyno data and more information on the kits available for this car….

DOWNLOAD - Power Kit Document - PDF

MRT XA POWER KIT

AVAILABLE | 20KW More Power | 15% More Torque

MRT XB POWER KIT

AVAILABLE | 35KW More Power | 40% More Torque

MRT XC POWER KIT

CUSTOM OPTIONS AVAILABLE - CALL US

Download the MRT Performance Power Kit Document below for Dyno data and more information on the kits available for this car….

DOWNLOAD - Power Kit Document - PDF

MRT XA POWER KIT

AVAILABLE | 20KW More Power | 15% More Torque

MRT XB POWER KIT

AVAILABLE | 35KW More Power | 40% More Torque

MRT XC POWER KIT

AVAILABLE | 45KW More Power | 45% More Torque

Download the MRT Performance Power Kit Document below for Dyno data and more information on the kits available for this car….

DOWNLOAD - Power Kit Document - PDF

MRT XA POWER KIT

AVAILABLE | 20KW More Power | 15% More Torque

MRT XB POWER KIT

AVAILABLE | 35KW More Power | 40% More Torque

MRT XC POWER KIT

AVAILABLE | 45KW More Power | 45% More Torque

Download the MRT Performance Power Kit Document below for Dyno data and more information on the kits available for this car….

DOWNLOAD - Power Kit Document - PDF

MRT XA POWER KIT

CUSTOM OPTIONS AVAILABLE - CALL US

MRT XB POWER KIT

CUSTOM OPTIONS AVAILABLE - CALL US

MRT XC POWER KIT

CUSTOM OPTIONS AVAILABLE - CALL US

Download the MRT Performance Power Kit Document below for Dyno data and more information on the kits available for this car….

DOWNLOAD - Power Kit Document - PDF

Our promise to you is to make sure we deliver on what you need, thats why we offer a warranty on almost every thing that you need
Ask yourself, does any other supplier offer this? :

  • Custom Tuned.
    Your car will be individually tuned to suit the production variatons, wear and tear of your car
    Yes your car is unique so we tune uniquely!
    You can rely on knowing we will deliver a result specific for you.
    We often spend 2 – 3 hrs fine tuning your car to get the best result, as part of our final testing and quality control.
  • Factory Warranty Guarantee.
    Improve and modify your car and keep all the benefits of your new factory warranty.
  • Used Car Dealer Warranty Guarantee.
    Improve and modifiy your car and keep all the benefits of your warranty when you purchase a used car .
  • Free Retunes for life.
    As long as your car remains mechanically the same as when we first tuned it, if there is a software update or a edit you need to meed your driving needs we do this free.
  • Noise Guarantee.
    Worried about exhaust noise? too loud, too quiet?
    MRT will ensure we deliver, or your money back.
  • Power Guarantee.
    We carefully test our kits on a large number of cars before we release them.
    That way, even if your car is a “lemon” we can deliver what we promise. No excuses!
    Our kits are not just a list of random parts we want to sell, each part is thouroughly checked for the value it ads to each kit.
  • Lifetime Warranty.
    All parts we supply and fit are good for the life of your ownership!
  • Deal with one supplier.
    We make our parts, we test them, we tune them, we develop them.
    No blaming, we give you the best and not just a list of parts that add no value to your budget,
  • Money back Guarantee.
    Even after all above and you get your car improved by MRT and for some reason you are not happy, let us know, we will refit everything back the way you arrived and you pay nothing.
  • Made in Australia.
    MRT are proud to be Australian, dont look overseas becuase people say its better.
    We have been working on Subaru’s for longer than any other company.

WANT MORE INFORMATION?

Contact MRT Performance here