GR Corolla N1 Evo Extreme Quad Catback, APEXi 164-KT23 Series

Select the tip material and mid-pipe version: 164-KT23 is titanium tips/resonated; 164AKT23 is stainless tips/resonated; 164-KT23P is titanium tips/non-resonated; 164AKT23P is stainless tips/non-resonated. The piping and mufflers are SUS304 stainless steel in all four versions; the titanium option refers to the tips.

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.

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
- Made in Japan

Bolt-On	Yes ✅
Part Number	164-KT23 : Titanium Tips, Resonated 164AKT23 : Stainless Steel Tips, Resonated 164-KT23P : Titanium Tips, Non-Resonated 164AKT23P : Stainless Steel Tips, Non-Resonated
Year	2023+
Make	Toyota
Model	GR Corolla
Body Style	5-Door Hatchback
Engine	G16E-GTS
Chassis	MZEAZ12
Exhaust Type	N1 Evolution Extreme Muffler (N1-X)
Piping Diameter	70mm - 60.5mm (Outer Left/Right) x 2 Piping 70mm - 50.8mm (Center Dual) x 2 Piping
Tip Diameter	Two Center Dual Tips - 93mm Two Outer Tips - 123mm
Pieces	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
Tip Material	- TP270 Grade - Titanium (Heat Treated Gradient Tips) - SUS304 Stainless Steel - Polished
Special Notes	Integrated Valved compatible with Factory OE Electronic Module
	WARNING: California Prop 65 Cancer & Reproductive Harm  www.p65warnings.ca.gov