Roush Axle-Back Exhaust System - 2-1/2 in Tailpipe - 4 in Polished Tips - Polished - Ford V6 / EcoBoost 4-Cylinder - Ford Mustang 2015-21 Radio Interface Cables Procedure for Measuring Shaft length:

Procedure for Measuring Shaft length:

5% FS (+/- 1 PSI)

21 in Compressed / 20

halfway down the back straight

Roush Axle-Back Exhaust System - 2-1/2 in Tailpipe - 4 in Polished Tips - Polished - Ford V6 / EcoBoost 4-Cylinder - Ford Mustang 2015-21 Radio Interface Cables Procedure for Measuring Shaft length:Roush's Axle Back Exhaust for the Ecoboost & V6 Mustangs is a great solution for anyone looking for a much more aggressive tone, and an overall better look! Ford's engine choices offer a variety of high performing, yet affordable & economic, options to suite any budget or sensibility. This would include the V6 & I4 engines, which perform well beyond what their cylinder count would imply. However, Ford's stock exhaust doesn't quite have the aggressive