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A'pexi

A'PEXi - N1 Evo Extreme (Catback) - 2024+ Acura Integra Type S [DE5]

SKU164-KH04
$2,599.00
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N1-XN1-X (With Out GT Frontpipe)

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About: A'PEXi - N1 Evo Extreme (Catback) - 2024+ Acura Integra Type S [DE5]

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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.

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Bolt-On Yes
Part Number
N1-X (W/OUT GT Frontpipe Kit) 164-KH04
N1-X + GT Frontpipe Kit
Web Exclusive ONLY
164-KH04 + 145-H003
Year 2024+
Make Acura
Model Integra Type S
Body Style 5-Door Hatchback
Engine K20C
Chassis DE5
Exhaust Type N1 Evolution Extreme Muffler (N1-X)
Piping Diameter 75mm piping to 75mm (valve side) and 61mm (non-valve side)
Tip Diameter 123mm. x 2
Pieces 3 Piece Catback Exhaust
2 Piece Bracket on Muffler
Exhaust Tip Style Titanium Round- Dual wall rolled, Angle cut (Riveted)
Piping Material SUS304 Stainless Steel
Muffler Material SUS304 Stainless Steel
Muffler Tip Material TP270 Titanium
Weight Data

164-KH04 (N1-X): 43.70 lbs (Stock: 47.51 lbs)
145-H004 (GT Frontpipe): 7.38 lbs (Stock: 10.14 lbs)
Notes ***Optional Frontpipe Sold Separately (Part No.Ā 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.

WARNING:Ā CaliforniaĀ Prop 65
Cancer & Reproductive HarmĀ 
www.p65warnings.ca.gov
BrandA'pexi
TypeExhaust
SKU164-KH04
Weight30.0 lb
Make["Acura"]
Material["gid://shopify/Metaobject/91049197865","gid://shopify/Metaobject/90679279913"]
Manufacturer Type["gid://shopify/Metaobject/90137755945"]

Shipping: Some items may qualify for free shipping with Local Pickup in store. All orders have a 2–3 business day processing time. Some orders may have extended shipping times based on current stock status — we'll confirm the lead time at order placement.

Returns: Accepted within 30 days of delivery for unused product in original packaging. Returns are subject to a 25% Restocking Fee. Special-order and custom-built items are final sale.

Warranty: All products carry the manufacturer's full warranty. Coverage is honored through PMD as your authorized dealer.

A tracking link is emailed automatically when your order ships. You can also log into your account at any time to view live order status.
Yes — we ship to most international destinations. Duties and taxes are calculated at checkout. Lead times vary by carrier and customs processing.
Inspect your shipment on delivery. If anything is damaged, photograph it before signing and contact us within 48 hours — we'll work with the carrier to resolve it at no cost to you.

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