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 |
|---|---|
| Part Number | 164KF001 |
| Year | 2015, 2016, 2017, 2018, 2019, 2020, 2021 |
| Make | Subaru |
| Model | – WRX (FA20) – STI (EJ25) |
| Body Style | 4-Door Sedan |
| Engine | – FA20 (WRX) – EJ25 (STI) |
| Chassis | VA |
| Exhaust Type | N1-X Evolution Extreme Muffler |
| Piping Diameter | 76.2mm. -> 63.5mm. x 4 |
| Tip Diameter | 93mm. x 4 |
| Pieces | 4 |
| 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 Tip |
| System Weight | |
| Sound Level | Sound Level: 94.4 dB @ 4,500 RPM |
| Special Notes | NOTE: Do not use harsh chemicals or metal polish cleaners when cleaning titanium tips. We recommend using standard isopropyl alcohol |
