Description

The HKS Stainless Steel Center Pipe is a key exhaust component engineered for maximum flow and performance, originally developed for the high-power GT570/GT600 Racing Package. This pipe replaces the restrictive factory second catalytic converter with a straight-through design, dramatically reducing exhaust backpressure to unlock significant horsepower potential. Available with an optional silencer, this is a competition-only part intended for track and off-road use where emissions compliance is not required.

Product Overview & Purpose

This center pipe addresses a major exhaust bottleneck in the GT-R’s system. By removing the second catalytic converter and replacing it with a straight, large-diameter pipe, it minimizes exhaust restriction, allowing the twin-turbo VR38DETT engine to expel gases much more efficiently. The result is improved turbo response, reduced exhaust gas temperatures (EGT), and substantial power gains, particularly in tuned applications. The inclusion of a silencer helps manage sound levels for track day noise restrictions.

Product Highlights

⚡ Maximum Flow for Maximum Power
The core design eliminates the factory second catalyst, creating a straight-through exhaust path. This major reduction in backpressure is critical for achieving high horsepower levels in modified GT-Rs, directly contributing to increased power output and turbo efficiency.

🔧 Proven in High-Power Racing Packages
This component is sourced directly from the proven HKS GT570 and GT600 Racing Package builds, signifying its reliability and effectiveness under extreme performance conditions. It is a track-proven solution for serious power upgrades.

🎵 Optional Silencer for Noise Management
The kit includes a bolt-on silencer, allowing you to tailor the exhaust volume to meet specific track day noise regulations or personal preference without significantly impacting the flow benefits of the straight-pipe design.

⚠️ Competition Use Only – Emissions Non-Compliant
This product is for competition and off-road use only. By removing the catalytic converter, it does not meet street emissions standards. It is the owner’s responsibility to ensure it is used only in sanctioned, non-public road environments.

Technical Specifications

• Product Name: Stainless Steel Center Pipe

• Model Code: 33004-KN001

• Compatibility: Nissan GT-R R35 (VR38DETT, December 2007 onward).

• Configuration: Replaces OEM second catalytic converter section. Straight-pipe design.

• Material: Stainless Steel.

• Key Feature: Straight-through design for minimal exhaust restriction. Includes optional silencer.

• Legal Status: Competition-Use Only Product. Not street legal for emissions.

Performance Philosophy

• Goal: To provide a fundamental, high-impact exhaust modification that removes a primary restriction for heavily modified and competition-focused GT-Rs. The focus is on absolute flow efficiency and power maximization for track, drag, or time attack use.

• Focus: An essential supporting modification for high-horsepower builds. It is a mandatory component for anyone pursuing serious power levels (500whp+), where factory exhaust restrictions become a significant limiting factor.

Installation & Usage Notes

• 🔧 Professional Installation Mandatory
  Installation involves removing the factory center pipe/catalytic converter assembly. Professional installation is required to ensure proper fitment, sealing, and to safely handle the removal of emissions equipment.

• ⚠️ Critical Legal & Usage Disclaimer

  • LEGAL STATUS: This product is NOT LEGAL for street or highway use in regions with emissions testing. It is sold for competition purposes only.

  • Intended Use: Strictly for closed-course competition, such as track days, drag racing, or time attack events.

  • Check Local Regulations: It is the purchaser’s sole responsibility to comply with all local, state, and federal laws regarding vehicle modifications and emissions equipment.

■ Installation image

■ Pipelay Water