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APEXi - N1 Evolution-X Exhaust, Lexus IS300 / IS350 2021+, Axleback with Stainless Tip (164AKT20)

APEXi - N1 Evolution-X Exhaust, Lexus IS300 / IS350 2021+, Axleback with Stainless Tip (164AKT20)


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Regular price $1,234.05 USD
Regular price Sale price $1,234.05 USD
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2021+ Lexus IS300 (Turbo / AWD)
2021+ Lexus IS350 

The N1 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.


Vehicle in video: Lexus IS350 F (2021+)



  • 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



Part Number

164-KT20 - Titanium

164AKT20 - Stainless Steel






IS300 Turbo / IS300 AWD / IS350

Body Style

4-Door Sedan




ASE30, GSE31, GSE36

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)

Piping Material

SUS304 Stainless Steel

Muffler Material

SUS304 Stainless Steel

Muffler Tip Material

(SUS304) Stainless Steel or (TP270) Titanium

System Weight

Special 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.***

WARNING: California Prop 65

Cancer & Reproductive Harm

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