Stiffen up that ?Stang! The Mishimoto 2015 Mustang strut tower brace ties the front strut towers together to make for a more rigid chassis. This Mustang strut tower brace can work with or without the stock performance package K-brace, but combining the stock K-brace with the Mishimoto Mustang strut tower brace proves to have the greatest increase on braking and cornering performance. This brace is made from 14 gauge steel tube with CNC-machined steel end plates for maximum rigidity. If competing in stock autocross classes, this 2015 Mustang strut tower brace will cause you no qualms, as it is legal for those classes. For peace of mind, this Mustang strut tower brace, along with all our 2015 Mustang parts, comes with the Mishimoto Lifetime Warranty to guarantee quality and performance.