Here is an economical way to increase HP on your Caliber SRT-4. This piece replaces the factory restrictive muffler. It slip fits on to your existing 3" pipe. To install the unit all that you need to do is make one simple cut on the stock pipe and slip this one in. We went ahead and put a nice resonator inline with the pipe. This tames the sound some and it passes as a muffler. This will give you some more top end power. Pear it up with our DP and you will get quicker spool up as well and increased HP. NOTE: PICTURES BELOW IS THE DOWNPIPE AND THE MUFFLER DELETE PIPE, YOU ARE ONLY GETTING THE MUFFLER DELETE PIPE. MD-CSRT4Regular price: $225.00Sale price: $190.00