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.
Features
- TIG-welded SUS304 stainless steel construction
- Matched and manufactured for select chassis
- Patented megaphone piping structure for torque and throttle response; the design creates a swirling exhaust-gas flow
Specifications
- Part Number: 164-KT20 - Titanium 164AKT20 - Stainless Steel
- Exhaust Type: N1 Evolution Extreme Muffler (N1-X)
- Piping Diameter: 60.5mm. x 2
- Tip Diameter: 105mm. x 2
- Exhaust Tip Style: Titanium Round - Dual wall rolled, Angle cut (Riveted) Stainless Steel Round - Dual wall rolled, Angle cut (Riveted)
- Pieces: 2
- Piping Material: SUS304 Stainless Steel
- Muffler Material: SUS304 Stainless Steel
- Muffler Tip Material: (SUS304) Stainless Steel or (TP270) Titanium
- Bolt-On Installation: Yes
Fitment
- Year: 2021, 2022, 2023, 2024, 2025, 2026 (Facelift Year Model)
- Make: Lexus
- Model: IS300 Turbo / IS300 AWD / IS350
- Body Style: 4-Door Sedan
- Engine: 2GR-FSE, 2GR-FKS, 8AR-FTS
- Chassis: ASE30, GSE31, GSE36
Notes
- Sound Level: 87 dB @ 4,500 RPM. Modular design: Midpipe and Rear Section can be interchanged with factory exhaust components. ***NOTE: Do not use harsh car wash soap or metal polish cleaners when cleaning titanium tips. We recommend using 70% isopropyl alcohol with a microfiber towel to clean the titanium tips.
| Brand | A'pexi |
|---|---|
| Type | Axle-Back Exhaust |
| SKU | 164-KT20 |
| Weight | 30.0 lb |
| Make | ["Lexus"] |
| Model | ["IS"] |
| 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.