Borla, Corsa, Bassani, Neuspeed, Magnaflow, Remus and More.

What is mandrel bending?  Mandrel bending adds an additional step, a die (the mandrel) that supports the pipe from the inside as it is bent and prevents the crinkling and collapsing.  This inside die is mounted on a long shaft and it is articulated, meaning that it moves during the bending process.  It has three, four or even five “donuts” that are ever so slightly smaller than the inside diameter of the pipe and are held to the tool by a ball and socket and spring arrangement.  These donuts swivel and pivot as the pipe passes over them.  White grease is injected through the mandrel to the inside of the pipe during the bending process.

The results are smooth, uniform, constant-diameter bends that greatly reduce restriction and improve both the performance and efficiency of your engine.  One of the most immediately noticeable advantages of a mandrel bent aftermarket exhaust system is the deeper and more aggressive rumble and “growl” of your exhaust