Install Toyota Corolla Hatchback Quad Exit Exhaust

By REMARK Exhaust | Published: 2026-10-25

Category: How-to Guides

Learn how to install a REMARK quad exit exhaust on your 2023+ Corolla Hatchback. Step-by-step guide with fitment tips for the rear bumper trim.

Quick answer

Installing a REMARK quad exit exhaust on a 2023+ Corolla Hatchback requires trimming the rear bumper diffuser section because it is no longer detachable. Follow these steps for a clean fit.

Why the 2023+ bumper needs trimming

The 2023 Corolla Hatchback received a minor facelift that changed the rear bumper design. The diffuser section is now integrated into the center bumper piece, so you cannot remove it separately. For the REMARK quad exit exhaust to fit, you must trim the bumper—this is expected and does not affect structural integrity.

Tools and preparation

You will need a jack, jack stands, a socket set (10mm, 12mm, 14mm), a marker, a rotary tool or hacksaw, and safety glasses. Work on a level surface and allow the exhaust to cool completely if the car was driven.

Installation steps

1. Raise and support the vehicle: Jack up the rear of the Corolla and place it securely on jack stands. Ensure the car is stable before working underneath. Never rely on the jack alone; use stands rated for the vehicle weight.
2. Remove the stock exhaust: Unbolt the factory exhaust from the flange behind the catalytic converter. Support the muffler section while removing hangers to avoid dropping it. The factory system comes off in two main pieces. Common mistake: forgetting to support the muffler can bend hanger bolts. Use a helper or a jack stand under the muffler.
3. Mark and trim the rear bumper: Hold the new quad exit tips against the bumper opening. Use a marker to trace the required cut on the integrated diffuser area. Use a rotary tool or hacksaw to trim along the line. Sand the edge smooth. Cut conservatively—trim a little, test fit, then trim more. You cannot add material back.
4. Install the REMARK quad exit system: Starting at the front, loosely attach the catback sections. Slide the dual muffler and quad tips into place. Ensure the tips align with the trimmed bumper opening. Tighten all clamps and hangers evenly. Leave all fasteners loose until the entire system is positioned. Tighten from front to back to prevent binding.
5. Check clearance and final tighten: Spin each wheel by hand to confirm no contact with the exhaust. Verify the tips do not rub the bumper edge. Torque all bolts to spec. A rattling tip usually means the bumper cutout is too tight or a hanger is loose. Adjust before lowering the car.
6. Lower and test: Lower the Corolla, start the engine, and listen for leaks at each joint. Let the system heat cycle once, then recheck bolt torque. After a short drive, re-torque the flange bolts—heat can loosen them initially.

Product details

Sports Touring Exhaust [Quad-Exit] - Toyota Corolla Hatchback 2023+: The REMARK Sports Touring Exhaust [Quad-Exit] is a catback dual muffler system for the 2023+ Toyota Corolla Hatchback. It delivers a deeper, refined exhaust note and a distinctive quad-tip look, but requires bumper trimming on the 2023+ model due to the redesigned rear bumper.
Sports Touring Exhaust [Quad-Exit] - Toyota Corolla Hatchback 2023+