Rear Tunnel Brace With Rear Driveshaft Safety Loop Protect your 2005-2014 Mustang and 2007-2012 Ford Shelby GT500, while complying with NHRA safety rules with a rear Driveshaft Safety Loop from BMR's suspension. If you drag race your S197 Mustang, chances are you need a driveshaft safety loop to be NHRA legal. Built from 1/4-inch laser-cut CNC-formed plate steel, BMRs DSL011 Driveshaft Safety Loop bolts-on using OE mounting holes from the factory floor pan. This design gives you a solidly mounted loop that will stay in place should a driveshaft or transmission failure occur.BMR's suspension designed the rear Driveshaft Safety Loop to contain a driveshaft, keeping it from ripping through the floor or digging into the track in event of a failure. It simply attaches to the factory floor pan with supplied Grade 8 hardware. Other companies driveshaft loops attach to the transmission and can fail to contain the driveshaft in the event of a transmission failure. BMR designed the DSL011 for street, drag race, and top speed applications. A rear Driveshaft Safety Loop is cheap insurance to protect your investment and provide peace-of-mind whether you are at the track or on the street. When performance is a must, rely on BMR's suspension!BMR does not recommend the DSL011 or the DTB002 with one-piece driveshafts. If those parts are used with a one-piece driveshaft, care must be taken when suspension droops. When lifting car, the rear jacking point should be the rear axle assembly.BMR's suspensions DSL011 bolt-on Driveshaft Safety Loop is available in black hammertone and red powdercoat for long-lasting good looks. Installation time is about 1 hour. Proudly made in the U.S.A.!