Corolla Hatchback Center-Dual Catback with TOM'S Diffuser Fit

By REMARK Exhaust | Published: 2026-10-30

Category: Product Reviews

Learn how to install the REMARK Catback Exhaust (Center-Dual) with TOM'S Racing Rear Diffuser on your 2019-2022 Toyota Corolla Hatchback, plus key fitment notes.

Quick Answer

The REMARK Catback Exhaust (Center-Dual) paired with the TOM'S Racing Rear Diffuser creates a clean, performance-oriented rear end for your 2019-2022 Corolla Hatchback. This guide walks through the installation sequence and common fitment checks.

Why the Center-Dual Setup Matters

The REMARK catback exhaust exits through two centrally positioned tips, which requires cutting the factory diffuser or swapping to an aftermarket unit like the TOM'S Racing Rear Diffuser. The TOM'S diffuser is designed without an exhaust outlet, so it must be trimmed or ordered specifically for center-dual exhausts. On 2019-2022 Corolla Hatchbacks, this combination gives a seamless look that factory quad-tip options cannot match.

One important trade-off: the TOM'S diffuser does not fit 2023+ models. If you drive a 2023 Corolla Hatchback, this diffuser is not an option, and the catback alone will need custom diffuser work.

Installation Steps: REMARK Catback + TOM'S Diffuser

1. Prepare the Vehicle: Jack up the rear of the car securely on jack stands. Remove the factory exhaust from the catalytic converter back. Also remove the entire OEM rear diffuser – not just the chrome garnish – to expose the mounting area. Common mistake: leaving the OEM diffuser partially attached can prevent the TOM'S diffuser from aligning properly.
2. Dry-Fit the TOM'S Diffuser: Before installing the exhaust, hold the TOM'S diffuser up to the rear bumper. Check that it sits flush and the mounting holes line up. Do not tighten bolts yet – you will need access to the exhaust hangers. If the diffuser does not sit flush, confirm that all factory clips and trim pieces are removed. Do not force it.
3. Install the REMARK Catback Exhaust: Hang the catback system from the factory rubber hangers. Slide the center-dual tips through the opening in the TOM'S diffuser. Adjust the exhaust so the tips are centered in the diffuser cutouts and the pipes do not contact the diffuser body. Common mistake: tightening the exhaust clamps before centering the tips can make final adjustment impossible.
4. Tighten and Final Alignment: Tighten all exhaust band clamps and hanger bolts to specification. Then fully secure the TOM'S diffuser with its supplied hardware. Double-check that the tips are evenly spaced side-to-side and front-to-back. Check that the exhaust does not vibrate against the diffuser under the car – reposition hangers if needed.
5. Test Fit and Clearance: Lower the vehicle to the ground. Cycle the suspension by pushing down on the rear bumper several times. Start the engine and listen for any rattles or contact. Re-adjust if necessary. If there is contact between the exhaust and diffuser, loosen the clamps, shift the pipes, and retighten.

Product Details

Catback Exhaust (Center-Dual) + TOM'S Racing Rear Diffuser [No-Exhaust Outlet] - Toyota Corolla Hatchback (2019~2022): The bundle includes the REMARK Catback Exhaust (Center-Dual) and TOM'S Racing Rear Diffuser for 2019-2022 Corolla Hatchbacks. Buying the bundle saves money compared to purchasing separately, and both components are designed to work together for a clean center-dual exit.
Catback Exhaust (Center-Dual) + TOM'S Racing Rear Diffuser [No-Exhaust Outlet] - Toyota Corolla Hatchback (2019~2022)