XS-POWER Long Tube Performance Header for Nissan Sentra SE-R Spec V 2.5L QR25DE
Unleash the exhaust-flow potential of your Nissan Sentra SE-R Spec V 2.5L QR25DE with the XS-POWER T304 Stainless Steel Long Tube Performance Header. Designed for enthusiasts looking for improved exhaust flow and stronger high-RPM performance, this is a serious exhaust upgrade for the naturally aspirated QR25DE platform.
The long-tube configuration replaces the restrictive factory-style exhaust manifold with performance-oriented primary runners designed to improve exhaust-gas evacuation before the gases merge at the collector.
Manufactured from T304 stainless steel with TIG-welded construction, CNC-machined flange surfaces and a large 2.5-inch outlet, this XS-POWER header is built for the enthusiast who wants performance, durability and an aggressive stainless-steel appearance.
⚡ PERFORMANCE FEATURES
- ✔ Long-tube performance header design
- ✔ Designed for Nissan QR25DE 2.5L applications listed below
- ✔ High-quality T304 stainless steel
- ✔ TIG-welded construction
- ✔ CNC-machined flange
- ✔ Large 2.5" exhaust outlet
- ✔ O2 oxygen sensor provision
- ✔ Metal gasket included
- ✔ Designed to increase exhaust-flow capacity
- ✔ Performance-oriented long primary runners
- ✔ Designed for stronger high-RPM / top-end performance
- ✔ Advertised potential gain of approximately 10-15 HP/TQ depending on setup
- ✔ 100% brand new – never used or installed
BUILT FOR THE SENTRA SE-R / SPEC V PERFORMANCE PLATFORM
The Nissan Sentra SE-R Spec V is a popular performance platform powered by Nissan's QR25DE 2.5-liter inline four-cylinder engine. Improving exhaust flow is an important part of extracting additional performance from a naturally aspirated QR25DE combination.
The XS-POWER long-tube design gives each cylinder a dedicated primary exhaust path before the exhaust gases merge at the collector. This configuration is designed to reduce exhaust restriction and improve scavenging as engine speed increases.
The goal: better breathing and stronger high-end performance.
⚙️ TECHNICAL SPECIFICATIONS
| Brand | XS-POWER |
| Product | Performance Exhaust Header |
| Header Style | Long Tube |
| Engine | QR25DE 2.5L |
| Engine Configuration | Inline 4-Cylinder |
| Material | T304 Stainless Steel |
| Construction | TIG Welded |
| Flange | CNC Machined |
| Outlet | 2.5 Inches |
| O2 Sensor Provision | Yes |
| Gasket | Metal Gasket Included |
| Condition | Brand New |
APPLICATION / FITMENT
NISSAN SENTRA 2.5L QR25DE
✔ 2002 Nissan Sentra SE-R 2.5L
✔ 2002 Nissan Sentra SE-R Spec V 2.5L
✔ 2003 Nissan Sentra SE-R 2.5L
✔ 2003 Nissan Sentra SE-R Spec V 2.5L
✔ 2004 Nissan Sentra SE-R 2.5L
✔ 2004 Nissan Sentra SE-R Spec V 2.5L
✔ 2005 Nissan Sentra SE-R 2.5L
✔ 2005 Nissan Sentra SE-R Spec V 2.5L
✔ 2006 Nissan Sentra SE-R 2.5L
✔ 2006 Nissan Sentra SE-R Spec V 2.5L
Engine: QR25DE 2.5L I4
WHY UPGRADE TO A LONG-TUBE HEADER?
Getting more air into an engine is only half of the performance equation. The engine also needs to efficiently evacuate exhaust gases.
A performance header replaces the common factory exhaust-manifold design with individual primary runners. This gives the exhaust pulses a more controlled path toward the collector and is designed to reduce performance-robbing restriction.
The XS-POWER long-tube configuration emphasizes upper-RPM exhaust flow, making it an excellent choice for performance-oriented Sentra SE-R and Spec V builds.
BUILD A COMPLETE QR25DE PERFORMANCE COMBINATION
For enthusiasts building a naturally aspirated QR25DE, the header can be combined with other airflow improvements such as:
- ✔ Performance cold-air intake
- ✔ High-flow exhaust components
- ✔ Performance cat-back exhaust
- ✔ ECU calibration / tuning where applicable
- ✔ Additional QR25DE airflow upgrades
Advertised power improvement is approximately 10-15 HP/TQ depending on the vehicle's existing setup. Actual results vary based on engine condition, intake and exhaust configuration, tuning, fuel and other modifications.
WHAT'S INCLUDED
- ✔ (1) XS-POWER QR25DE Long Tube Stainless Steel Header
- ✔ Metal Gasket
- ✔ O2 Sensor Provision
INSTALLATION
Professional installation is highly recommended. Installation instructions are not included.
As with performance exhaust components, the installer should verify flange alignment, exhaust clearance, O2 sensor placement and downstream exhaust compatibility before final assembly.
NISSAN SENTRA SE-R SPEC V / QR25DE FAQ
Does this header fit the Nissan Sentra SE-R Spec V?
Yes. This header is designed for the listed 2002-2006 Nissan Sentra SE-R and SE-R Spec V 2.5L QR25DE applications.
Is this a long-tube header?
Yes. This is a true performance-oriented long-tube header design intended to improve exhaust flow and emphasize high-RPM performance.
What engine does this header fit?
It is designed for the Nissan QR25DE 2.5L inline four-cylinder engine in the applications listed above.
What size is the exhaust outlet?
The header features a 2.5-inch outlet.
Does the header have an O2 sensor provision?
Yes. An oxygen-sensor provision is incorporated into the header configuration.
What material is the XS-POWER Spec V header?
It is manufactured from T304 stainless steel with TIG-welded construction and a CNC-machined flange.
How much power can a QR25DE long-tube header add?
The advertised potential is approximately 10-15 HP/TQ depending on the existing vehicle setup. Results vary based on intake, exhaust, tuning, engine condition and supporting modifications.
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