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How to Install a MBRP Cat Back Exhaust on your 2012-2017 Jeep Wrangler JK

Installation Time

1 hours

Extreme Terrain
Shop Parts in this Guide


Removal of stock system:

1. Apply a penetrating lubricant liberally to all exhaust fasteners, hangers and rubber insulators. 

2. Loosen the guard below the transfer case and remove. Refer to Figure 1.

Figure 1


3. Start to remove the exhaust by loosening the clamp just before the muffler on the driver’s side. Refer to Figure 2.

Figure 2


4. The muffler can be removed by removing the hangers from the rubber isolators, one on each side. Refer to Figure 3.

Figure 3


5. Loosen the clamp on the extension pipe and remove from the existing isolators. Refer to Figure 4. 

Figure 4


 Installation of MBRP Inc. Performance Exhaust:

1. Install the Extension Pipe using a 2 ½” Clamp and attaching it to the existing rubber isolator. Leave the clamp loose enough for some adjustment. Refer to Figure 5. NOTE: for the 2 door model the extension pipe will need to be shortened by 20½” 

Figure 5


2. Slide a 2 ½” Clamp over the Extension Pipe and then install the Over Axle Pipe to the Extension Pipe. Attach the Over Axle Pipe hanger to the existing rubber isolator. Refer to Figure 6. 

Figure 6


3. Slide a 2 ½” Clamp onto the Over Axle Pipe. Install the Muffler to the Over Axle Pipe, and then install the Muffler hanger into the factory rubber insulator. Refer to Figure 7. 

Figure 7


4. Slide a 2 ½” Clamp over the Tail Pipe and install onto the Muffler. Slide the Tail Pipe hanger into the existing the rubber insulator. Refer to Figure 8. 

Figure 8


5. Install the Exhaust Tip onto the Tail Pipe and tighten.

6. Align the exhaust as required. Starting at the front of the exhaust, tighten all clamps and connections.

7. Reinstall the guard below the transfer case.

​8. Check along the whole length of the exhaust system to ensure that there is adequate clearance around the spare tire, fuel and brake lines or any wiring. If any interference is detected relocate or adjust. 


Congratulations! You are ready to begin experiencing the improved power, sound and driving experience of your MBRP Inc. performance exhaust system. We hope you enjoy your purchase.