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HKS 3-Stage Nissan R35 GTR Exhaust System 2008-11 VR38DETT 31025-AN006

by HKS
Sale Sale
Original price $10,000.00
Original price $10,000.00 - Original price $10,000.00
Original price $10,000.00
Current price $7,998.99
$7,998.99 - $7,998.99
Current price $7,998.99
SKU HKS 31025-AN006

This is a special order item. Please contact us for lead time before ordering.

The digital control valve exhaust system for sound pressure and exhaust efficiency. It's always a challenge to acquire both quietness and high output for the automobile. To comply for turbo upgraded for R35 GT-R, we have developed a changeover valve system muffler. So depending on the exhaust flow, the flow channel can be changed to give more power and cool exhaust sound.



2 valves in front and 2 valves in the back operated by an electric motor. The valves are connected to the motor with cables and a special unit controls the motor.


In the automatic mode, the valves are opened or closed by the RPM or automobile speed. For low RPM (Stage 1), all the valves are closed which provides quiet sound. For mid RPM (Stage 2), only the back valves are open for both power and quietness is provided. And finally, for high RPM (Stage 3), all the valves are open for the most power. Also, the manual mode lets you open all the valves.


The finisher has a special surface work that makes it hard for soot to stick to.


A special metal emblem comes with the kit.


This graph shows each 3 stages testing. We have analyzed the muffler's sound pressure and exhaust balance and set the switching point of the stages. (When driving, it automatically changes)


* Stage 1 sound pressure is very like to the sound of a stock muffler.

Code No. 31025-AN006



Cert. No. JQR20126112
Vehicle GT-R
Model R35
Engine VR38DETT
Model Year 07/12 - 10/10
Shape of muffler Specialized Finisher
(3sx Muffler)
Main material S304(*2)
Diameter of tip 118+90+75 L&R
Diameter of center pipe 94-50 x2/60 x2/65 x2(*3)
Close noise level Stock L88 R89
HKS L87 R87
About road clearance(*4) Clearance 110mm
Portion of the kit Center pipe
Product Weight  




About HKS muffler

*1: About silencer shell type of Silent Hi-Power
TYPE-S/Oval silencer for noise reduction.
TYPE-H/Round silencer for performance.

*2: Main material in the component figure.

 : SUS304/High quality stainless steel.
 : SUH409/Stainless steel commonly used for stock exhaust.

*3: About center pipe
Diameter of center pipe is the portion that has the largest diameter. (Excluding silencer and tip.) It is the condition with stock suspension.

*4: Minimum road clearance between HKS muffler (Any parts included in the kit) and road surface. Therefore, it may be different from actual road clearance of the vehicle.
The data is basically the condition with stock suspension. However, please understand that some items have data with low down spring or ride height adjustable suspension kit.

Caution: Hook, bracket, stay may be changed without prior notice.


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Domestic Shipping Policy

Shipment processing time

All orders are processed within 1-2 business days. Orders are not shipped or delivered on weekends or holidays. If we are experiencing a high volume of orders, shipments may be delayed by a few days. Back order items are subject to special shipping times. If there will be a significant delay in shipment of your order, we will contact you via email or telephone.

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Standard Shipping is 2-5 days.

We offer free ground shipping for orders over $200 within the United States.

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*Overnight delivery is only available for orders with delivery addresses within the continental United States.

**Delivery delays can occasionally occur

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You will receive a Shipment Confirmation email once your order has shipped containing your tracking number(s). The tracking number will be active within 24 hours.

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We currently do offer international shipping within some countries. Please contact us by email or phone to place an order.