Quick answer

Installing the REMARK Sports Touring Quad-Exit catback on your 2022+ Toyota GR86 or Subaru BRZ is a straightforward DIY job, but you need to avoid a few common mistakes to get a perfect fit and sound.

Why the Quad-Exit Design Matters for Installation

The quad-exit layout means four tailpipes instead of two. This changes how you align the rear section during installation. Each side has a pair of tips that must be level with each other and the bumper cutouts. Rushing this alignment is the most common reason for a lopsided look.

Installation steps for the REMARK Quad-Exit Catback

  1. 1. Support the stock system before unbolting: Place a jack or sturdy block under the stock muffler. The rear section is heavy and will drop onto the crossmember if you remove the hangers first. Loosen the two flange bolts at the mid-pipe connection, then the four rubber hanger bolts. Never remove all bolts before supporting the muffler.
  2. 2. Transfer the rubber hangers to the new exhaust: The REMARK catback uses your stock rubber hanger mounts. Remove them from the old muffler and install them onto the new quad-exit assembly before lifting it into place. Use a small amount of rubber grease or soapy water to slide them on. The hangers can be tight; lubricant helps avoid tearing the rubber.
  3. 3. Install the mid-pipe first, loosely: Slide the mid-pipe onto the existing tailpipe flange. Hand-tighten the two bolts only. Do not fully torque them yet. The mid-pipe must be free to pivot so the rear section can align properly. Tightening the mid-pipe early locks the system into a crooked position.
  4. 4. Hang the quad-exit muffler section: With the mid-pipe loose, lift the muffler section and hook the rubber hangers into the chassis brackets. Push the inlet tubes into the mid-pipe outlets. The quad tips should sit roughly centered in the bumper cutouts. Adjust the muffler left/right by shifting it on the hangers. Both pairs of tips must be equally visible from the rear. Check from a low angle.
  5. 5. Align the tips before tightening anything: With the muffler hanging, look at the gap between each tip and the bumper. All four tips should be the same distance from the plastic. If one side is too high or low, loosen the hanger bolts and reposition the muffler. Only when the alignment looks even, tighten the mid-pipe flange bolts to 35 ft-lb. Use a straight edge across the tips to verify they are parallel to the ground.
  6. 6. Final torque and re-check: Tighten the hanger bolts to 25 ft-lb. Warm the engine to operating temperature and let the exhaust expand. Re-check tip alignment after the first drive. A heat cycle can shift the system slightly. Re-torque the mid-pipe flange after 100 miles.

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