Axleback Install Guide for Subaru Crosstrek and Impreza Wagon

By REMARK Exhaust | Published: 2026-10-28

Category: Buying Guides

Learn how to install a REMARK axleback on your Subaru Crosstrek or Impreza Wagon. Step-by-step process with common mistakes and fitment tips.

Quick Answer

Installing a REMARK axleback on your Subaru Crosstrek or Impreza Wagon is a bolt-on job you can do in about an hour with basic hand tools. Follow the steps below to avoid the most common fitment and sealing mistakes.

Why Choose an Axleback for Your Crosstrek or Impreza Wagon

An axleback replaces everything from the rear axle back, including the muffler. It's the simplest way to change your Subaru's sound without touching the catalytic converter or affecting emissions. The REMARK axleback for the Crosstrek and Impreza Wagon adds a low rumble at idle and full throttle while staying subtle at cruising speeds.

Because it bolts directly to the factory pipe, you won't need welding or cutting. That also means you can return to stock easily if you ever sell the car or want a quieter ride.

What to Expect During the Install

The process is straightforward but requires attention to a few details: getting the old hangers off, aligning the new tips, and torquing the bolts properly. Most people finish in 45 to 90 minutes with a jack and stands.

The REMARK axleback is designed for 2018+ Crosstrek and 2017-2023 Impreza Wagon models. Double-check your vehicle year before ordering to ensure a perfect fit.

Step-by-Step Axleback Install

Gather Tools and Prep the Car: You'll need a jack, jack stands, 12mm and 14mm sockets, a ratchet, penetrating oil, and a rubber mallet. Park on a flat surface, chock the front wheels, and let the exhaust cool completely. Never work under a car supported only by a jack.
Remove the Old Axleback: Spray the hangers and bolts with penetrating oil. Unbolt the flange connecting the axleback to the midpipe, then pull the rubber hangers off using a pry bar or your hands. Carefully lower the old assembly. If the flange bolts are rusted, use a breaker bar and replace them with new ones.
Compare the New Axleback: Lay the REMARK axleback next to the old one to confirm the hanger positions and tip alignment match. This is your last chance to catch a fitment issue before installation. If anything looks off, stop and contact support before forcing anything.
Install the New Axleback: Lift the new axleback into place and loosely attach the flange bolts. Reconnect all rubber hangers, using a little soapy water as lubricant. Then tighten the flange bolts to 35 ft-lb, alternating sides. Tighten the flange evenly to prevent exhaust leaks.
Check Alignment and Clearance: With the car still on stands, wiggle the exhaust to ensure it doesn't contact the bumper or suspension. Adjust the hangers or tip position as needed, then lower the car. Recheck clearance after lowering, as the suspension settles.
Start and Inspect for Leaks: Start the engine and listen for hissing at the flange. If you hear a leak, tighten the bolts a bit more. Also check that the tips sit evenly in the bumper cutout. A quick test drive will confirm the sound and verify no rattles.

Product Facts

Axleback w/ Muffler - Subaru Crosstrek [2018+] / Impreza Wagon [2017-2023]: The REMARK axleback with muffler replaces the OE exhaust and bolts on without any modifications. You can install it with basic hand tools and return to stock later if needed.
Axleback w/ Muffler - Subaru Crosstrek [2018+] / Impreza Wagon [2017-2023]