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How to Install MBRP XP Series 3.5 in. Cat-Back Exhaust - Single Side Exit on your Sierra
Shop Parts in this Guide
PLEASE READ BEFORE STARTING INSTALLATION
While MBRP Inc. has made every effort to ensure that all components of this system are of superior quality and properly packaged, it is the installer's responsibility to ensure the following before removal of the factory components:
• that ALL components shown above are present.
• that ALL mating components fit together.
• that there are no damaged components.
• that the system you have purchased is appropriate for your vehicle year, model and configuration.
• that the system will not interfere with any modifications previously installed or planned.
• that you have read and understand these instructions.
If you have any questions or are uncertain about any aspect of the installation of this system to your vehicle please contact your dealer before commencing installation.
Removal of Stock System
1. Apply a penetrating lubricant liberally to all exhaust fasteners, hangers and rubber insulators.
2. Remove the clamp after the catalytic converter and save the clamp for the installation. Refer to Figure 1.
3. The stock system can be carefully removed in one piece by lowering the spare tire or the tail pipe can be cut to clear the rear axle. Refer to Figure 2 (Arrow).
4. Remove the hangers from the rubber insulators and remove the exhaust from the vehicle.
Installation of Performance Exhaust
1. Install the Front Extension Pipe to the existing flange using the clamp removed earlier. Leave the hardware loose enough for some adjustment. Refer to Figure 3.
2. Slide the Hanger Clamp onto the rear of the Front Extension Pipe and attach to the existing rubber insulator. Slide a 3.5” Clamp onto the Front Extension Pipe.
On 153” wheelbase trucks (Crew Cab 6.5’ box) install the Extension Pipe onto the rear of the Front Extension Pipe and slide an additional 3.5” Clamp onto the Extension Pipe.
Refer to Figure 4.
3. Install the Muffler onto the Extension Pipe using a 3.5” Clamp. Refer to Figure 5.
4. Slide a 3.5” Clamp onto the Muffler and install the Over Axle Pipe into the
Muffler. Attach the hangers to the factory rubber insulators.
Refer to Figure 6.
5. Slide a 3.5” Clamp over the Over Axle Pipe and install the Tail Pipe onto
the Over Axle Pipe.
Refer to Figure 7.
6. Insert the tail pipe hanger into the factory rubber insulator and install the
Exhaust Tip onto the Tail Pipe.
Refer to Figure 8 and 9.
7. Align the exhaust as required. Starting at the front of the exhaust, tighten all clamps and connections.
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 know you will enjoy your purchase.
