How to Install MBRP Installer Series 2.5 in. Cat-Back Exhaust - Split Rear Exit on your F-150

Removal of Stock System:

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

2. Loosen the factory clamp in front of the muffler.

3. Loosen the factory extension pipe flange bolts.
Refer to Figure 1.

4. Rotate the factory extension pipe to release the factory muffler inlet locking boss.
Refer to Figure 2.

5. Remove the factory muffler assembly from the hangers and remove from the vehicle.

6. Remove the factory extension pipe bolts and remove the factory extension pipe from the vehicle.

Installation of MBRP Inc. Performance Exhaust:

1. Determine the overall length of the Extension Pipe (if required).
Refer to figure 3.

2. Slide the Flange onto the Front Pipe and loosely install the Front Pipe using the supplied Hardware.
Refer to Figure 4.

3. Install the appropriate length Extension Pipe onto the front pipe using a 3” Clamp.
Refer to Figure 5.

4. Install the Hanger Clamp onto the Extension Pipe and into the factory isolator.
Refer to Figure 6.

5. Install the Muffler onto the Extension Pipe and lightly secure with the Hanger Clamp. Muffler outlets will be at a 45º angle viewed from the rear, with the passenger-side outlet at the bottom.
Refer to Figure 7.

6. Place a 2.5” Clamp over each Muffler outlet and insert the Driver-Side Over-Axle Pipe into the left upper Muffler outlet and factory isolator.
Refer to Figure 8.

7. Install the Passenger-Side Over-Axle Pipe into the lower right Muffler outlet. Snug but do not completely tighten the 2.5” Clamp.
Refer to Figure 9.

8. Install the Hanger Assemblies using the supplied Hardware through the large holes in the rear of the frame. Tighten the hardware enough to support the pipe but leave the final tightening until the final step. The Hanger Assembly attachment allows for some height adjustment to align the Tail Pipes.
Refer to Figures 10 and 11. (Driver-side shown)

9. Install the Passenger-Side Tail Pipe onto the Passenger-Side Over-Axle Pipe and into the Passenger-Side Hanger Assembly.
Refer to Figure 12.

10. Install the Driver-Side Tail Pipe into the Driver-Side Hanger Assembly and onto the Driver-Side Over-Axle Pipe using a 2.5” Clamp.
Refer to Figure 13.

11. Install the Exhaust Tips and adjust to your liking.
Refer to Figure 14 and 15.

12. Once everything is aligned, completely tighten ALL Clamps and Hardware.

13. 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.