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GrimmSpeed Strut Bar (Black) - 2015-2021 Subaru WRX / STI prop65_reproductiveSharper Turn In, Less Body Roll Starting With the Strut Bar The GrimmSpeed Strut Bar in Black for the 2015 2021 Subaru WRX STI is a triangulated aluminum chassis brace that connects the front strut towers, reducing lateral chassis flex under hard cornering. The result is more consistent front suspension geometry through corners, sharper turn in response, and more predictable handling balance on the VA WRX STI. Bolt in at factory strut tower mounting
it offers virtually unlimited performance potential
front or rear fenders
Standard Lever and Factory-Compatible Installation
Use it with matched front hardware and proper spring rates for optimal results
the Essentials Kit takes a proactive approach -- refresh all the high-priority positions at once and start with a clean baseline
Load a Cobb Off-The-Shelf map in minutes
This means peak boost is achieved earlier in the RPM range and maintained for longer as the RPMs climb
The license
Whether if you are an enthusiast with a daily driver who enjoys the occasional weekend autocross or spirited canyon drive
Restore Front End Precision on Your Ford or Mazda
No drilling required
Locknut secures boost setting