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How to Install Gibson 3 in. / 2.25 in. Dual Split Stainless Cat-Back Exhaust System - Split Rear

Installation Time

2 hours

Tools Required
  • 1/2", 9/16", 15mm wrenches & sockets
  • WD-40
  • hacksaw
  • jack stands

When installing this exhaust system make sure to use proper safety precautions. Use jack stands when working under the vehicle, set parking brake, block tires and use safety glasses and gloves. Allow exhaust to cool before attempting installation. Severe injury or burns could occur if safety measures are not taken.

1. Disconnect the negative battery cable before removal of OEM exhaust. This will allow the computer to reset and recognize the new exhaust. Lay out the exhaust on the floor so it looks like the drawing and compare parts with manual.


2. To remove stock exhaust, unbolt it at the flange behind the Y-pipe. Make sure to leave all rubber grommets in the factory location. You will re-use stock nuts and bolts. For easier removal of exhaust, cut behind the muffler. Use WD-40 to remove hangers from grommets.


3. Bolt headpipe #A to the stock flange re-using the factory nuts and bolts. Insert welded hanger into rubber grommet. Do not tighten.

2009 Models: If you have a ball flange you need to measure 12” from the 2-bolt flange and cut. Then use adapter #N to install onto vehicle.


4. Install muffler #B with inlet towards Y-pipe. Use jack stands to support the muffler. Use clamp #F to secure the muffler to headpipe. Do not tighten.


5. Install metal hanger #H into hole located approximately 16" from the rear of the frame. Use hardware kit #I, washer #M, and rubber grommet #J.


6. Install driver side tailpipe #D into muffler at least 1.5" to 2". This pipe will route over the axle and between the shock and spare tire. Use clamp #G to secure pipe to muffler. Do not tighten. Insert welded hangers into rubber grommet.


7. Install passenger side tailpipe #C into muffler at least 1.5" to 2". Use clamp #G to secure pipe to muffler. Do not tighten. The tailpipes will both lean towards the driver side for clearance. Insert welded hangers into rubber grommets.


8. Install exit pipes #E onto tailpipes. Cut to your preferred length then use clamps to secure exit pipes to tailpipes. Install stainless steel tips. Clamp down. When you have everything in place, firmly tighten all bolts and clamps down securely. Use stainless steel cleaner and a Scotch Brite pad weekly to prevent tip from discoloration. Inspect all fasteners after 25-50 miles of operation and re-tighten as necessary.

GIBSON EXHAUST systems are designed on a factory stock vehicle
Any aftermarket products installed could increase the sound levels of the exhaust.
Make sure there is a 1” clearance from ALL rubber brake lines, shock boots, lines, tires, etc. to prevent heat related damage or fire.

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