HKS Exhaust Extension Kit

HKS Exhaust Extension Kit

A stock extension is designed to merge the main port (turbine exhaust) and bypass port (wastegate actuator) in turbine exhaust housing. This causes the exhaust stream from the main port to interfere with the bypass port stream when the actuator is opened. The primary and secondary exhaust pressure will rise causing the boost pressure to drop, which can cause a loss in power.
The HKS Extension Kit will optimize the turbines performance with minimal power loss.

The HKS Extension Kit utilizes an individual main port (turbine exhaust) and bypass port (wastegate actuator) to reduce the exhaust gas interference and provide a smoother exhaust flow. This will also reduce backpressure and improve the boost response throughout the RPM range. Even with the stock turbine, the exhaust gas merges in the exhaust housing. This exhaust gas interference can be prevented by a divider in the exhaust flange. The pipes connect towards the lower part of the extension housing where the exhaust gas pressure is lower. The main pipe's diameter is enlarged at the turbine outlet so the swirl flow caused by exhaust gas interference can be reduced. This will also prevent the secondary exhaust pressure from rising, and stabilize the boost pressure to increase the engine output. The flange is made with a high structural steel material, and the piping is made with a high heat resistant and durable Stainless (SUS304). These components will also improve the engine compartment appearance.

Note: This product can be used with an HKS GT Sports Turbine KIT or stock turbine.

There were many famous turbines in HKS' History. And that's the history of the tuning itself. HKS have been optimizing those turbines for each automobile and with other necessary parts they made tuning kits for small tune-ups to super high-power tune-ups. HKS' turbine kit can fulfill your desire of tune-ups.

HKS turbine kits are developed under the tough situation such as street or motor sport competition. We have tested in all situation of driving environment and collected the data. All these exploitation lead them to develop the world's best tuning turbine kit.

Dit product is compatibel met volgende voertuigen

Voertuig Merk: Voertuig Model: Voertuig Variant: Vanaf: Tot: Motorcode: Notes
Nissan Skyline R33 GT-R 1995 1999 RB26DETT 2.6L - 4WD Petrol
Nissan Skyline R33 GT-R 1997 1999 RB26DETT 2.6L - 4WD Petrol
Nissan Skyline R34 GT-T 1999 2001 RB25DET 2.5L - RWD Petrol
Nissan Skyline R34 GT 1999 2001 RB25DET 2.5L - RWD Petrol
Nissan Skyline R34 GT-Four 1999 2001 RB25DET 2.5L - 4WD Petrol
Nissan Skyline R33 GT-R 1999 2001 RB26DETT 2.6L - 4WD Petrol
Nissan STAGEA Turbo 1998 2002 RB25DET 2.5L - 4WD Petrol

Whether it is engine, exhaust, suspension, or drive-train systems, there is no substitute for the performance, quality and reliability of HKS. Part-Box/Co-ordSport are an approved distributor for HKS performance and tuning products.

For over 35 years, HKS products have been put to the test in drag racing, road racing, rallying, and top speed trials. HKS equipped vehicles have captured numerous racing championships and hold claim to a myriad of competition records using many “off the shelf”, race proven HKS components. As a result, HKS has been synonymous with “performance” in the automotive aftermarket industry for the past 35+ years.


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  • Model: 1418-RN010
  • Beschikbaarheid: Vraag naar beschikbaarheid
  • RRP: €312,18 (incl. BTW)
  • Excl. BTW: €258,00

Tags: HKS-Exhaust-Extension-Kit