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StopTech 81.838.9921 - Drilled Aero-Rotor Kit Front

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This part fits

  1. 2015 Subaru WRX STI
  2. 2014 Subaru WRX STI
  3. 2013 Subaru WRX STI
  4. 2012 Subaru Impreza WRX STI
  5. 2012 Subaru Impreza WRX STI Limited
  6. 2011 Subaru Impreza WRX STI
  7. 2011 Subaru Impreza WRX STI Limited
  8. 2010 Subaru Impreza WRX STI
  9. 2009 Subaru Impreza WRX STI
  10. 2008 Subaru Impreza WRX STI
  11. 2007 Subaru Impreza WRX STI Limited
  12. 2007 Subaru Impreza WRX STI
  13. 2006 Subaru Impreza WRX STI
  14. 2005 Subaru Impreza WRX STI
  15. show all...
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About this product

Part #: 81.838.9921

StopTech AeroRotor Replacement Kits ARK are designed to replace your vehicle's original factory rotors, while retaining the factory brake calipers. Although the ARK is the same diameter and thickness as the factory rotors, it offers improved cooling, braking, and handling. The directional, floating AeroRotors allow independent expansion of the rotor and hat without "coning," thanks to elongated drive pin holes. ARK components include AeroRotor friction rings with patented internal vane design, pre-assembled to billet aluminum AeroHats with directional stand-offs that optimize cooling airflow. The patented AeroRotor vane design pushes up to 80 percent more air than factory rotors for better cooling and reduced fade on the track. The aircraft-grade aluminum hats and 2-piece AeroRotors are up to 8 pounds lighter than stock rotors, allowing faster acceleration and deceleration, and improved handling. StopTech AeroRotors are available slotted or cross-drilled. These slots or holes allow better dissipation of heat, friction material and debris, assuring that fresh pad material is in contact with the rotor every time the brakes are applied. An optional anti-corrosion, zinc finish is available for customers in cold climates, where salt and chemicals are used to melt snow and ice. The zinc coating also benefits customers who prefer no visible surface rust on the vanes and outer circumference of the rotors. StopTech AeroRotors are 100 percent made in the USA.

More Details

See what our community says about stoptech products

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What made you choose this particular product?
Reputable brand, great price. Hub/hat area and outer edges are painted to prevent rust.
What were you trying to accomplish by adding this product?
Better braking performance.
Was it easy install? Any installation tips that will help others?
Installed myself. Simple task if you've ever replaced pads and rotors before on a VW.
Once you’ve had a chance to use the product, did it meet your expectations?
Performance is great and the slotting keeps the pads shaved smooth and clean.
Any additional comments?
Price listed is for both rear rotors.
View on Tanner's build
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What made you choose this particular product?
the original rotors were vibrating due to abuse in the track
What were you trying to accomplish by adding this product?
rotors for eliminating vibrations, stainless steel braided lines for braking performance
Was it easy install? Any installation tips that will help others?
myself
View on Guido's build
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What made you choose this particular product?
Brake Temp
What were you trying to accomplish by adding this product?
Better Braking
Was it easy install? Any installation tips that will help others?
Easy
Once you’ve had a chance to use the product, did it meet your expectations?
Yes
Any additional comments?
Highly Recommend
View on Adam's build
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What made you choose this particular product?
Price and performance
View on José's build
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What made you choose this particular product?
Stoptech Frequently outfits their cars with total vehicle kits and coupled with their fluids You never will overheat a good street/track set up
What were you trying to accomplish by adding this product?
Prevent overheating my brake fluids and boiling them off
Was it easy install? Any installation tips that will help others?
Very easy.
Any additional comments?
Typical Dry Boiling Point: 594°F (312°C) Typical Wet Boiling Point: 404°F (206°C) Minimum Wet Boiling Point: 383°F (195°C)
View on Craig's build
California prop 65 warningWARNING: Cancer and Reproductive Harm www.p65warnings.cs.gov

*Some manufacturer restrictions apply.

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