Subaru WRX VB: Axleback vs Catback Exhaust Upgrade

By REMARK Exhaust | Published: 2026-10-25

Category: Comparisons

Deciding between an axleback and catback exhaust for your 2022+ Subaru WRX VB? Compare the REMARK Axleback and Sports Touring Catback on sound, cost, and performance trade-offs.

Quick answer

For a budget-friendly aggressive tone, choose the REMARK Axleback. If you want maximum flow and a deeper, refined sound for the 2.4L turbo engine, the Sports Touring Catback is the better fit.

Sound and tone differences

The axleback kit uses larger 4" tips and no muffler, giving your WRX a raw, aggressive exhaust note that many owners describe as the classic Subaru rumble. It bolts directly to the factory midpipe, so you keep the stock resonator and mid-section piping.

The Sports Touring Catback is engineered from a blank slate for the FA24F engine. It omits a resonator on the midpipe, which reduces restriction and produces a powerful tone that is less raspy and more refined than the axleback. The catback also includes a full replacement of the midpipe, so the sound character changes more noticeably.

Installation and cost trade-offs

The axleback is the simpler and cheaper route. At roughly 40% less than the catback, it requires no cutting or welding—just bolt-on to the factory midpipe with supplied gaskets and hardware. It is ideal if you want a weekend project that takes under an hour.

The Sports Touring Catback costs more but replaces the entire rear exhaust section. Installation is still straightforward but involves more components. The extra expense buys better flow potential for tuned or future-upgraded WRXs.

Axleback vs Catback trade-offs

Sound character: Axleback gives a raw, aggressive Subaru rumble. Catback offers a deeper, more refined tone with less rasp.
Installation effort: Axleback is a simple bolt-on to the factory midpipe. Catback replaces the entire rear section but is still DIY-friendly. Choose axleback for a quick weekend upgrade.
Future upgrade path: Catback supports higher flow for tuned engines. Axleback is best for stock or lightly modified WRXs. If you plan a tune or turbo-back system later, start with the catback.

Product facts at a glance

Axleback (4") - Subaru WRX VB [2022+]: Mufflerless axleback kit with 4" tips that bolt directly to the factory midpipe, includes new gaskets and hardware. You get a louder, more aggressive Subaru sound without modifying the midpipe, and the larger tips fill the rear bumper cutouts for a finished look.
Axleback (4") - Subaru WRX VB [2022+]
Sports Touring Exhaust (4" Catback) - Subaru Impreza WRX (VB) 2022+: Flagship catback system designed from a blank slate for the 2.4L FA24F WRX, offered without a resonator on the midpipe for a free-flowing, powerful tone. This system maximizes exhaust flow for the turbo engine, delivering a deeper, cleaner note that suits owners who plan to tune or add performance upgrades later.
Sports Touring Exhaust (4" Catback) - Subaru Impreza WRX (VB) 2022+

Which one fits your build?

Best for

Drivers who want an aggressive sound on a budget and plan to keep the WRX mostly stock
Owners who prefer a quick, bolt-on installation without cutting or welding

Not ideal for

Those who want the deepest possible tone and maximum flow for a tuned engine
Buyers who plan to eventually upgrade to a full turbo-back system—the catback is the better long-term foundation