Stoptech ST-22 Rear Big Brake Kits With 345x28 Rotors Subaru WRX 2015-2017



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StopTech's Balanced Brake Upgrade equips your Subaru WRX with larger, four or six piston front calipers, two piston rear calipers, and plus sized StopTech AeroRotors. StopTech big brake kits provide a neutral biased brake system that will improve safety and performance on and off the track as well as add a striking visual enhancement that is second to none. StopTech BBKs also include stainless steel brake lines and StopTech Performance brake pads to complete the package.

Adding StopTech ST-40 front calipers to your WRX as part of the Balanced Brake Kit will give you the advantage of one of the stiffest calipers on the market. StopTech's calipers incorporate their bolt-in bridge, which is strong enough to dramatically reduce caliper distortion yet does not sacrifice the caliper's cooling. The squeeze forged StopTech calipers have the least flex of any tested after market or OEM caliper. The air channel in the bridge is designed to help air flow through the retainer, resulting in better cooling. A stiffer caliper on your WRX means improved performance without added vibration, noise or pad taper. You will also benefit from better pedal feel under extreme braking conditions. You can brake confidently, knowing your calipers are staying cool as you dive into the next corner.

The StopTech big brake kit uses StopTech's patented Two-Piece Floating Directional Aero Rotors with your choice of several rotor diameters, featuring their innovative leading and trailing edge designed cooling vanes. The unique vanes inside the disc maximize airflow through the AeroRotor to reduce turbulence and flow more air than any rotor tested. AeroRotors provide up to 80% better airflow over original equipment rotors and 10-30% better airflow than other directional vaned racing rotors. What does that mean for you? Your WRX's rotors will stay cooler lap after lap (or stoplight after stoplight). Cooler rotors are less prone to warping and cracking, and will also help to prevent brake fade and/or failure.

StopTech makes their own stainless steel brake lines for your WRX in Southern California. StopTech is a DOT (U.S. Department of Transportation) registered supplier of stainless steel brake lines. Line material and fittings are all made from the highest quality parts available. StopTech's brake lines feature a clear, abrasion-resistant cover for maximum protection against chaffing. Necessary quality control procedures are in place to ensure lines are the correct length and every fully assembled StopTech stainless steel brake line is tested to a pressure of 4,500 psi.

The supplied StopTech performance street pad is and excellent choice for the daily driven WRX and function great for the occasional autocross. If regular trips to autocross events or track days are in your WRX's future, be sure to purchase a more appropriate pad for those events.

StopTech big brake kits calipers are commonly available in red or black with the Trophy kits coming in a dark grey anodized finish.

Anti-corrosion gold zinc coating benefits those who live in cold climates, where snow and road salt are commonly encountered, or those who would prefer no visible surface rust on the vanes and outer circumference of their rotors. This option will add to lead times, please call for more information.

Kits Include:

  • 345x28 Rear Aero Rotors
  • ST-22 2-pot Rear Brake Calipers
  • Stainless Steel Brake Lines
  • StopTech Performance Brake Pads
  • Brackets and Hardware


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