N1-X Evolution Extreme Midpipe
2022+ Lexus IS500
The N1 Evolution Extreme is based on the proven performance basics of the N1 muffler. Optimum exhaust efficiency is achieved through the mid-pipes running parallel between the catalytic converter and rear muffler section. The H-style piping design was opted to equalize the pressure in both exhaust pipes. Our unique modular design allow the mid-pipes to be interchangeable with the factory OEM exhaust system components along with the rear section which is sold separately.
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 powerband. This piping design allows for a swirling exhaust gas flow effect that has for years produced proven results
- Compatible with the N1-X Evolution Extreme rear section part number 164-KT21 (Titanium Tips) or 164AKT21 (Stainless Steel Tips)
| Bolt-On | Yes |
|---|---|
| Part Number |
- 144-KT13: Resonated - 144-KT13P: Non-Resonated |
| Year | 2022, 2023, 2024, 2025 |
| Make | Lexus |
| Model | IS500 |
| Body Style | 4-Door Sedan |
| Engine | 2UR-GSE |
| Chassis | USE30 |
| Exhaust Type | N1 Evolution Extreme Muffler (N1-X) |
| Piping Diameter | 65mm. x 2 - 50mm. x 4 |
| Pieces | 3 |
| Piping Material | SUS304 Stainless Steel |
| System Weight | Mid-pipe only 25.90 lbs. (Stock- 35.50 lbs.) 7.6 lbs. lighter than OEM |
| Special Notes | Sound Level (with part # 164-KT21 or 164AKT21): Resonated- 93.1 dB, Non-Resonated- 95.7 dB @ 4,500 RPM. Modular design-> Mid-pipe and Rear Section can be interchanged with factory exhaust components. |
| Gasket Replacement |
- Front Section (Header to Midpipe) x2 - P105 x D66.5: 3901-1650 - Mid Section (Center of the Midpipe Kit) x2 - P97 x D66.5 : 3901-1660 - Rear Section (Connecting to Rear Axleback) : Factory OE Donut Gasket (Lexus OE Factory product) |
$299.00
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