A'PEXi - N1 Evo Extreme (Axleback) - 2016+ Lexus GS-F



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Tip Style: Stainless

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N1-X Evolution Extreme Muffler Axleback Exhaust (Stainless Steel & Titanium Tips)
2016+ Lexus GS-F 

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 gradiation appearance.


  • 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
Bolt-On Yes
Part Number 164-KT12 (Titanium Tips)
164AKT12 (Stainless Tips)
Year 2016, 2017, 2018, 2019, 2020
Make Lexus
Model GS-F
Body Style 4-Door Sedan
Engine 2UR-GSE
Chassis URL10
Exhaust Type N1 Evolution Extreme Muffler (N1-X)
Piping Diameter 65mm. x 2 - 50mm. x 4
Tip Diameter 93mm. x 4
Pieces 2
Exhaust Tip Style Stainless Steel Round- Dual wall rolled, Angle cut (Riveted)
Piping Material SUS304 Stainless Steel
Muffler Material SUS304 Stainless Steel
Muffler Tip Material TP270 Titanium (164-KT12)
SUS304 Stainless Steel (164AKT12)
System Weight 34.20 lbs. (Stock- 41.30 lbs.)
Sound Level Sound Level: 91.3 dB @ 4,500 RPM. Modular design->Midpipe and Rear Section can be interchanged with factory exhaust components.
Special Notes Modular design->Rear Section can be interchanged with factory exhaust components.
WARNING: California Prop 65
Cancer & Reproductive Harm