APEXi N1 Evo Extreme Performance VB Catback System - 2022+ Subaru WRX

The A’PEXi N1-X Evolution Extreme refines the legendary N1 design for the latest FA24-powered WRX. Built for enthusiasts who demand both performance and precision, it combines a straight-through exhaust layout with a hybrid silencer system that balances free-flowing power with refined acoustics. Lightweight titanium tips feature a rolled, riveted double-pipe construction that reduces surface temperatures while showcasing a signature heat gradation finish.

Installed On 2022+ VB WRX

Key Features

• Straight-Through Efficiency: Maximizes exhaust flow for improved boost response and top-end power.
• Hybrid Silencer System: Offers quiet performance at cruise with an aggressive tone under throttle.
• Patented Megaphone Piping: Enhances torque and throttle response by creating a swirling exhaust gas flow effect.
• Premium TIG-Welded Construction: Built entirely from SUS304 stainless steel for longevity and corrosion resistance.
• Heat-Treated Titanium Tips: Dual-wall rolled and riveted design for form, function, and standout aesthetics.
• Chassis-Specific Fitment: Engineered for VA-chassis WRX models for precise alignment and ease of installation.

Why We Like It

This system defines balance—civil on the highway, raw and responsive when opened up. It brings out the FA24’s turbocharged character while giving the WRX a premium tone that feels unmistakably A’PEXi.

N1-X Evolution Extreme Catback Exhaust for 2022+ Subaru WRX VB

Specifications

• Exhaust Type: N1-X Evolution Extreme Muffler
• Piping Diameter: 76.2 mm → 63.5 mm × 4
• Tip Diameter: 93 mm × 4
• Pieces: 4
• Exhaust Tip Style: Titanium dual-wall rolled, angle-cut (riveted)
• Piping Material: SUS304 Stainless Steel
• Muffler Material: SUS304 Stainless Steel
• Muffler Tip Material: TP270 Grade Titanium
• Sound Level: 94.4 dB @ 4,500 RPM
• Bolt-On: Yes

Installation Notes

• Direct bolt-on to factory mounting points; reuses OEM hangers.
• Ensure proper gasket seating and tip alignment before tightening.
• Professional installation recommended for optimal fit and sound.
• Cleaning Note: Avoid harsh chemicals or metal polishes on titanium tips. Use standard isopropyl alcohol only.

What’s in the Box

• A’PEXi N1-X Evolution Extreme Muffler system (4 pieces)
• Gaskets and installation hardware
• Instruction manual

Compatibility & Disclaimers

Designed specifically for the VA-chassis WRX (FA24). For off-road or motorsport use in some regions. Verify compliance with local noise and emissions regulations before installation.