Roush 421145 Exhaust System

The media could not be loaded. I ordered this for my 2012 V6 Mustang. It fit perfectly. Sounds great.After a thousand or so miles, the sound really deepens.Product is great, shipping was great. Would recommend.Before ordering, I would look under your car to see if you will have any complications on installing these.In my case, the previous owner had welded the OEM exhaust on the car, so I had to take this to a shop to install. Costed about $150 to install. Just something to take into account.

My husband's '13 mustang sounds amazing with this! It was not hard to install, it's easier if you have the rear end lifted. It is loud, especially with acceleration. When you have the car in drive and just coast it isn't loud at all. It is kind of like a purr when it's just coasting. I highly recommend, well worth the money!

Was excited after researching for an axle back I wanted and this was finally delivered. Passenger side went on fine but driver side I fought with much more just to find the connecting point was over flared and the spherical clamp wasn’t big enough. Spent an extra two hours just trying to fasten it in place because I’ve already spent all this time fighting with it I wasn’t going back.

Super easy to install, sounds amazing!!! I did it in my garage in about an hour to take my stock off and put my Roush on. WARNING: if you don't use a lift and take off the pipe in the front the driver side will give you a run for your money. I did all mine on the ground with no jack or lift and the driver side is a tighter squeeze than the passenger side, but it is do able, but if you want your stock off and roush on in less than 20 minutes i suggest using a lift and unbolting the front part of the pipe. Great product!!

Starting off with a muffler delete the roush provides a way better sound . It's more of a deep tone. Also because of the muffler delete the removal was way easier for me . Don't expect any bangs or pops like most videos though .

This system looks great! And it is loud! I love it. It has a great rumble at idle and at speed with higher rpm it has like an exotic car sound. I did notice a little boom at freeway speeds but not really a bad one. After a few days I'm used to the sound and love it even more! Tunnels, omg drive thru a tunnel roll your window down, drop a gear or two and enjoy the wonderful sound!!! It has that cool popping sound when decelerating. One cool thing I noticed is I'm getting 4 more mpg! Even with driving hard and hammering it its still getting better milage than before. Mixed driving I was getting 22 to 24 now it's 26 to 28

I bought my 2012 Mustang V-6, 6 speed manual, used 3 months ago, and decided to jazz up the exhaust a bit. Like the 3-star rating says, "it's OK." The caveat is, I'd never done this before - putting a performance exhaust on a car - and had some erroneous assumptions. The exhaust sounds fine at idle, and when revving the engine. Also sounds good under acceleration, although it tends to backfire in the 1-2 and 2-3 shifts, and drone pretty heavily under load. I can live with the backfiring (with apology to the neighbors), but the drone is aggravating, as it is there most of the time at highway speeds in sixth gear. I live in a somewhat hilly area (central TX), and any incline will bring on the drone. I can get rid of it by staying in fifth gear, and I don't lose more then 5-10% gas mileage by doing that, but still... Unfortunately, there didn't seem to be an easy way to sonic-sample exhausts outside of youtube, and that didn't give the full experience.

The media could not be loaded. Better than expected. We did a lot of research and the Roush Axle Back seem to have the most consistent reviews. We listened to numerous sound videos. The videos do not do this justice. Sounds far better than what we expected. Very easy to install.