HKS Turbo Outlet Extension Kit for Nissan Skyline GT-R BNR34 / BCNR33 / BNR32 RB26DETT – V-Spec Performance Exhaust Flow Upgrade

Product Description

Upgrade the exhaust flow and turbocharger efficiency of your legendary Nissan Skyline GT-R RB26DETT with the HKS Turbo Outlet Extension Kit. Engineered by HKS for high-performance RB26 applications, this extension kit is designed to improve exhaust gas flow by separating the main turbine exhaust flow from the wastegate bypass flow, helping reduce exhaust-gas interference and backpressure.

The result is a smoother exhaust path, improved boost response and better utilization of the turbocharger's potential—making this an excellent choice for enthusiasts looking to optimize their RB26DETT turbo system without compromising the engine bay's performance-oriented appearance.

Why Choose the HKS Extension Kit?

HKS Performance Engineering
HKS has developed the Extension Kit around the specific exhaust-flow characteristics of turbocharged Nissan RB26DETT applications. The design addresses the exhaust interference that occurs when turbine and wastegate flows merge through the stock-style outlet arrangement.

Improved Exhaust Flow & Reduced Backpressure
The separate main and bypass ports help reduce exhaust-stream interference and promote smoother gas flow. HKS states that this design can reduce backpressure and improve boost response across the RPM range.

Built for High-Performance Use
HKS uses high-strength materials and heat-resistant stainless-steel construction on its Extension Kit designs, providing durability in the extreme temperatures associated with turbocharged exhaust systems.

Optimized for the RB26DETT
The HKS design is specifically developed around the RB26DETT turbocharger and exhaust configuration. Certain HKS versions feature an inlet matched to the stock RB26 turbo configuration and an enlarged outlet designed to improve exhaust flow.

Excellent Performance-to-Value Upgrade
Rather than replacing the entire turbo system, an extension kit targets a critical part of the exhaust path. For RB26 owners already investing in turbo, exhaust and engine upgrades, this makes it a practical supporting modification for improving the overall efficiency of the setup.

Key Benefits

• Genuine HKS high-performance engineering

• Designed for Nissan Skyline GT-R RB26DETT applications

• Helps separate turbine and wastegate exhaust flow

• Reduces exhaust-gas interference

• Promotes smoother exhaust flow

• Helps reduce secondary exhaust backpressure

• Supports improved turbo/boost response

• High-temperature, durable construction

• Ideal for performance-oriented RB26DETT builds

• Excellent supporting upgrade for turbocharger and exhaust modifications

Application

Designed for selected Nissan Skyline GT-R RB26DETT applications, including:

• BNR32 Skyline GT-R – 1989–1994

• BCNR33 Skyline GT-R – 1995–1998

• BNR34 Skyline GT-R – 1999–2002

• BNR34 V-Spec – specific HKS extension-kit versions

HKS lists separate product codes for different applications. For example, HKS identifies 1418-RN005 for BNR32/BCNR33/BNR34 applications and 1418-RN011 specifically for the BNR34 V-Spec.

Important: Please verify the exact HKS part number and turbocharger compatibility before ordering. HKS notes that compatibility may depend on the turbocharger installed, and certain Extension Kits cannot be used with HKS GTIII Sport Turbine Kits.

The Smart Choice for RB26DETT Performance

If you're building a responsive, efficient and reliable RB26DETT setup, the HKS Turbo Outlet Extension Kit is a worthwhile supporting modification. Its purpose-built exhaust-flow design helps address a restriction in the stock turbo exhaust-flow arrangement while maintaining the quality and engineering expected from HKS.

For enthusiasts who want genuine Japanese performance engineering, durable construction and improved turbo-system efficiency at a more accessible cost than a complete turbo upgrade, the HKS Extension Kit offers an attractive performance-to-value proposition.

Upgrade the exhaust flow. Reduce interference. Optimize your RB26DETT turbo system with HKS.