Invidia
Invidia Q300 Axle-Back Exhaust 3.5" Rolled Dual-Wall Titanium Tips - 2022+ Subaru WRX
Fits Your Vehicle
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Overview
The Invidia Q300 Axle-Back Exhaust with 3.5" Rolled Dual-Wall Titanium Tips is a premium, bolt-on exhaust upgrade engineered exclusively for the 2022 and newer Subaru WRX (VB chassis). Purpose-built for daily drivers and weekend enthusiasts alike, the Q300 unlocks the FA24 turbocharged engine's true exhaust character — delivering a deep, refined, drone-free growl without the harshness of louder systems. CARB compliant and requiring zero ECU tuning, this is the ideal first performance modification for any new WRX build.
Key Features & Benefits
- Q300 Resonated Muffler Technology — Invidia's proprietary flat-bottom muffler design uses an internal Advantex material and continuous-piping architecture to deliver a deep, sporty exhaust note at all RPMs while eliminating highway drone — perfect for commuters and long-distance drivers.
- 3.5" Rolled Dual-Wall Titanium Tips (89mm) — Stunning dual-wall construction provides a premium, factory-plus aesthetic with heat-resistant titanium finish that resists discoloration and bluing over time, for lasting curb appeal.
- 60mm Mandrel-Bent SUS304 Stainless Steel Piping — Full-diameter mandrel bends maintain an unobstructed exhaust flow path, dramatically reducing backpressure over the factory crimped bends and allowing the FA24 turbo engine to breathe more freely for improved throttle response.
- Robot TIG Welds & CNC-Machined Flanges — Precision robotic TIG welding and CNC-machined flanges at every connection point ensure flat, leak-free sealing and structural integrity mile after mile.
- Direct OEM Bolt-On Fitment — Engineered to exact factory specifications for the 2022+ WRX chassis using OEM hanger locations. No cutting, welding, modification, or ECU tune required.
- CARB Compliant — Legal in All 50 States — Does not alter, remove, or replace any emissions equipment, making this an emissions-safe upgrade legal for use in California and all 50 states, including at smog check time.
- Improved Mid-Range & Top-End Performance — Larger diameter piping and reduced backpressure translate to meaningful mid-to-top-end horsepower and torque gains over the restrictive factory exhaust system.
- Proven Invidia Quality — Invidia is one of the most widely installed aftermarket exhaust brands on Subaru platforms globally, with thousands of street and track builds proving their fitment accuracy and long-term durability.
What's Included
- Invidia Q300 Axle-Back Muffler Assembly (Left & Right)
- 3.5" Rolled Dual-Wall Titanium Exhaust Tips (pre-installed)
- OEM-replacement exhaust gaskets
- All necessary mounting hardware and fasteners
Specifications
| Manufacturer Part Number | HS22SW4AQ4RTL |
|---|---|
| Brand | Invidia |
| System Type | Axle-Back Exhaust |
| Piping Material | SUS304 Polished Stainless Steel |
| Piping Diameter | 60mm (approx. 2.36") |
| Tip Style | Rolled Dual-Wall |
| Tip Finish | Titanium (T.I.) |
| Tip Outer Diameter | 89mm (approx. 3.5") |
| Weld Type | Robot TIG Welded |
| Flange Type | CNC-Machined |
| Muffler Design | Q300 Flat-Bottom Resonated, Advantex Internal Material |
| Resonated | Yes |
| ECU Tune Required | No |
| CARB Compliant | Yes — Legal in All 50 States |
| Hardware Included | Yes |
| SKU | invHS22SW4AQ4RTL |
Fitment & Compatibility
This axle-back exhaust system is engineered exclusively for the 2022–2026 Subaru WRX (VB Chassis) equipped with the FA24 turbocharged 2.4L engine. This is a direct OEM bolt-on replacement using factory hanger locations — no modifications to the vehicle are required. This system is not compatible with the WRX STI or previous-generation VA-chassis WRX models (2015–2021).
Note: This is an axle-back system and connects to the factory midpipe. If you have already installed an aftermarket cat-back exhaust or a non-OEM midpipe, verify midpipe outlet diameter compatibility (60mm / 2.36") before purchasing.
Frequently Asked Questions
Is the Invidia Q300 CARB compliant? Yes. This axle-back exhaust does not alter, remove, or replace any emissions control equipment, making it fully CARB compliant and legal for use in California and all 50 states.
Will this exhaust drone at highway speeds? No. The Q300's large-volume resonated muffler is specifically tuned to eliminate highway drone while preserving an aggressive exhaust note under acceleration — making it ideal for daily drivers.
Do I need a tune after installing this exhaust? No ECU tune is required. This is a direct bolt-on axle-back replacement that does not affect engine management.
How long does installation take? Most experienced DIY enthusiasts can complete installation in 1–2 hours using basic hand tools and a vehicle lift or jack stands.
Installation
The Invidia Q300 Axle-Back Exhaust is a direct bolt-on replacement requiring no cutting, welding, or modifications. Using OEM hanger locations and the included hardware and gaskets, installation can typically be completed in 1–2 hours with basic hand tools and a vehicle lift or jack stands. Always allow the factory exhaust to cool completely before beginning removal. No ECU tune is required after installation. Professional installation is recommended for those unfamiliar with exhaust system work.