The N1 Evolution Extreme carries forward the proven performance heritage of the iconic N1 muffler, engineered for maximum exhaust efficiency through its straight-through layout design. At its core is an internal hybrid silencer that balances raw power and free-flowing exhaust characteristics with refined sound resonance.

A newly designed titanium muffler tip enhances both function and form, constructed from lightweight rolled titanium, riveted onto a dual-pipe structure. This design not only acts as a diffuser to reduce exhaust temperatures but also delivers a striking heat-gradient finish for a true motorsport aesthetic.

Product Features

• Premium TIG-welded SUS304 stainless steel construction, delivering both durability and performance gains while maintaining a refined sound level.

• Application-specific fitment designed and manufactured for select chassis.

• Patented Megaphone piping structure optimizes torque and throttle response across the power-band, utilizing a unique swirling exhaust gas flow effect that has been proven through years of performance results.

Bolt-On	Yes
Part Number	Stainless Steel Tips : 164AKT27 Titanium Tips : 164-KT27
Year	2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
Make	Lexus
Model	IS250 / 350
Body Style	4-Door Sedan
Engine	- 4GR-FSE - 2GR-FSE
Chassis	GSE20, GSE25 / GSE21, GSE26
Exhaust Type	N1 Evolution Extreme Muffler (N1-X)
Piping Diameter	70mm. to 60.5mm. to 60.5mm. x2
Tip Diameter	123mm. x 2
Pieces	3
Exhaust Tip Style	Stainless Polished Round- Dual wall rolled, Angle cut (Riveted) Titanium Burnt Round- Dual wall rolled, Angle cut (Riveted)
Piping Material	SUS304 Stainless Steel
Muffler Material	SUS304 Stainless Steel
Muffler Tip Material	- SUS304 Stainless - TP270 Titanium
System Weight	32lbs
Special Notes
	WARNING: California Prop 65 Cancer & Reproductive Harm  www.p65warnings.ca.gov