The A'PEXi N1 Evolution Extreme (N1-X) builds on the straight-through layout of the N1 muffler. An internal hybrid silencer balances flow with sound resonance, and the titanium tip is rolled and riveted onto a double-pipe structure that acts as a diffuser to reduce temperature, with a heat-gradation finish.
Specifications
- Part Number: 164KF001
- Exhaust Type: N1-X Evolution Extreme Muffler
- Piping Diameter: 76.2mm. : 63.5mm. x 4
- Tip Diameter: 93mm. x 4
- Exhaust Tip Style: Titanium Round- Dual wall rolled, Angle cut (Riveted)
- Pieces: 4
- Piping Material: SUS304 Stainless Steel
- Muffler Material: SUS304 Stainless Steel
- Muffler Tip Material: TP270 Gr Titanium Tip
- Sound Level: Sound Level: 94.4 dB @ 4,500 RPM
- Bolt-On Installation: Yes
Fitment
- Year: 2015-2021
- Make: Subaru
- Model: WRX (FA20); STI (EJ25)
- Body Style: 4-Door Sedan
- Engine: FA20 (WRX); EJ25 (STI)
- Chassis: VA
Notes
- NOTE: Do not use harsh chemicals or metal polish cleaners when cleaning titanium tips. We recommend using standard isopropyl alcohol
| Brand | A'pexi |
|---|---|
| Type | Cat-Back Exhaust |
| SKU | 162AKH26 |
| Weight | 65.0 lb |
| Make | ["Subaru"] |
| Model | ["WRX"] |
| Material | ["gid://shopify/Metaobject/91049197865","gid://shopify/Metaobject/90679279913"] |
| Manufacturer Type | ["gid://shopify/Metaobject/90137755945"] |
Shipping: Some items may qualify for free shipping with Local Pickup in store. All orders have a 2–3 business day processing time. Some orders may have extended shipping times based on current stock status — we'll confirm the lead time at order placement.
Returns: Accepted within 30 days of delivery for unused product in original packaging. Returns are subject to a 25% Restocking Fee. Special-order and custom-built items are final sale.
Warranty: All products carry the manufacturer's full warranty. Coverage is honored through PMD as your authorized dealer.
No reviews yet — be the first to share your experience.