A'PEXi - N1 Evo Extreme (Catback) - 2023+ Honda Civic Type-R [FL5]- ** Preorder ETA Lead Time - Early September ** - N1-X + GT Frontpipe (A'PEXi Web-Store Direct Only)

Special Price $2,699.10 Regular Price $2,999.00
sku
APEX-164-KH03 + 145-H003
  • Specifically designed for the 2023+ Honda Civic Type-R (FL5) to ensure a perfect fit and optimal performance.
  • Includes the N1-X muffler and GT frontpipe for a complete catback system that boosts both sound and power.
  • Delivers a deep, aggressive exhaust note that enhances your driving experience without being too loud.
  • Made from high-quality materials for durability and long-lasting performance on the road.
  • Improves exhaust flow to help increase horsepower and throttle response.
  • Lightweight design helps reduce overall vehicle weight, contributing to better handling.
  • Easy to install with no major modifications needed, so you can get back on the road quickly.
  • Available for preorder now with an estimated delivery in early September—secure yours before they sell out!
  • Sold exclusively through the A'PEXi web store, ensuring you get the genuine product and support.

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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.

Bolt-OnYes
Part Number
N1-X (W/OUT GT Frontpipe Kit)164-KH03
N1-X + GT Frontpipe Kit
Web Exclusive ONLY
164-KH03 + 145-H003
Year2023+
MakeHonda
ModelCivic Type-R
Body Style5-Door Hatchback
EngineK20C
ChassisFL5
Exhaust TypeN1 Evolution Extreme Muffler (N1-X)
Piping Diameter75mm piping to 75mm (valve side) and 61mm (non-valve side)
Tip Diameter123mm. x 2
Pieces5
Exhaust Tip StyleTitanium Round- Dual wall rolled, Angle cut (Riveted)
Piping MaterialSUS304 Stainless Steel
Muffler MaterialSUS304 Stainless Steel
Muffler Tip MaterialTP270 Titanium
Weight Data164-KH03 (N1-X): 42.70 lbs (Stock: 47.51 lbs)
145-H003 (GT Frontpipe): 7.38 lbs (Stock: 10.14 lbs)
ValveOE Valve functions with electronic valve system with factory OEM module
Notes***Optional Frontpipe Sold Separately (Part No. 145-H003)

Before completing the installation of the exhaust system with the factory OEM Valve Motor System, follow these steps:

  1. Uninstall the OE Valve Motor: Remove the OE Valve motor from the factory exhaust and disconnect it from the harness connected to the vehicle.

  2. Reset the Valve Motor: Prior to mounting the valve motor on the A'PEXi N1-X Exhaust System, ensure to plug the Valve Motor separately to initiate a factory reset position. This process typically takes around 5-10 seconds to automatically rewind to the reset position. Notably, this reset can be performed without the car being turned on.

  3. Reinstall the Valve Motor: Once the Valve Motor has completed its self-reset, remount it onto the bracket and proceed to install both the Valve Motor and the bracket onto the N1-X exhaust system.

Following these steps ensures proper installation and functionality of the exhaust system with the Valve Motor System.

***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 
www.p65warnings.ca.gov
More Information
Brand APEXi
Model 164-KH03 + 145-H003