A'PEXi - N1 Evo Extreme (Axleback) - 2022+ Subaru WRX (VB) ** In Stock ** - 164-KF01
- Designed specifically for the 2022+ Subaru WRX (VB) to ensure a perfect fit and easy installation.
- Axleback exhaust system that enhances your car’s sound with a deep, aggressive tone without being too loud.
- Made from high-quality materials for durability and long-lasting performance.
- Improves exhaust flow to help boost your car’s power and throttle response.
- Sleek design that adds a sporty, stylish look to your WRX’s rear end.
- Lightweight construction helps reduce overall vehicle weight for better handling.
- Comes in stock and ready to ship, so you can upgrade your ride without waiting.
- Trusted brand known for quality and performance in the automotive community.

The N1-X Evolution Extreme is based on the proven performance basics of the N1 muffler which emphasizes optimum exhaust efficiency utilizing a straight-thru layout design. Equipped with an internal hybrid silencer uniting power and free flowing characteristics with effective functional sound resonance. A newly adopted muffler tip completes the tail end of the exhaust that serves both purposes of function and form. Constructed with a light weight titanium material rolled and riveted onto a double pipe structure which acts as a diffuser enabling temperature reduction, meanwhile retaining a sporty heat gradation appearance.
PRODUCT FEATURES:
- High-level of quality using tig-welded SUS304 stainless steel uniting quiet performance with high-power performance gains
- Matched and manufactured for select chassis
- Patented Megaphone piping structure to produce excellent torque and throttle response throughout the power-band. This piping design allows for a swirling exhaust gas flow effect that has for years produced proven results
Bolt-On | Yes |
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Part Number | 164-KF01 |
Year | 2022+ |
Make | Subaru |
Model | WRX (FA24) |
Body Style | 4-Door Sedan |
Engine | FA24F (T/C) |
Chassis | VB (M/T and A/T) |
Exhaust Type | N1-X Evolution Extreme Muffler |
Piping Diameter | 60mm x 2 |
Tip Diameter | 123mm. x 2 |
Pieces | 2 |
Exhaust Tip Style | Titanium Round- Dual wall rolled, Angle cut (Riveted) |
Piping Material | SUS304 Stainless Steel |
Muffler Material | SUS304 Stainless Steel |
Muffler Tip Material | TP270 Gr Titanium |
Special Notes | NOTE: Do not use harsh chemicals or metal polish cleaners when cleaning titanium tips. We recommend using standard isopropyl alcohol |
![]() | WARNING: California Prop 65 Cancer & Reproductive Harm www.p65warnings.ca.gov |
Brand | APEXi |
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