SJJ25R / SJJ25S

2018 Jeep Wrangler JL 2DR & 4DR HGC

Stainless Steel Catback System

After you have inventoried the parts begin by placing your Jeep on a lift or 4 jack stands so you can work safely

under your vehicle.

Unbolt the factory muffler using the 15mm socket and remove the muffler from the vehicle. To aid in the removal

presoak the bolt and nut as well as the rubber bushings.

Next using a 13mm socket loosen the ball socket clamp at the end of the factory down pipe and remove the fac-

tory mid-pipe. Save all the rubber hanger bushing they will be reused. (Removal of the skid plate is recommend-

enough engagement into the muffler. A general rule is plus 1 ¾” from the end of the muffler nipple.

Now that you have the major components loosely installed align the system (the bends in the mid-pipe will run Now that you have the major components loosely installed align the system (the bends in the mid-pipe will run

parallel to the ground) and tighten all clamps. Make sure the ball socket is seated and the U- clamp captures

both parts equally. This is critical to creating a good seal. Air tools are highly recommended for this part.

Now start your vehicle and check for leaks. It’s not uncommon to see condensation coming from the relief cuts in

the pipe for the first few hundred miles. Double check all clamps and hardware for tightness after the first week

of operation and adjust accordingly.

SJJ25S

SJJ25R

1 TJJ25 Tailpipe