HKS 2SX Exhaust System | Nissan Skyline GT-R BNR34

Regular price $1,980.00 USD Sale price $1,980.00 USD Regular price $2,200.00 USD
Sale 10.0% $220.00 USD (10.0%)
Special order - Ships in 8+ weeks
SKU: hks31025-AN007
Product Description

HKS made quite an impact on the Skyline GT-R when the car was first released. Given the car's lore, it has not really dropped in popularity in the tuning world. In order to keep up with the times, HKS has released revised and improved products for the BNR34 chassis. The 2SX Exhaust System is one of their favorite achievements, combining both practical use with modern technology.

The 2SX (2 Stage eXhaust) Control System is a high performance dual exit catback exhaust system. The benefit comes in an electronically controlled valve that controls sound and power output depending on how you drive. The valve is connected to both engine and vehicle speed signals to close the valve at leisurely driving, while opening it up with more aggressive driving (RPM above 3300). This is all done automatically once fully connected and cannot be open/closed arbitrarily.

Besides the special features, this is a large 85mm (3.35 inch) exhaust system capable of handling high power builds. It has Dual 90mm (3.55 inch) Titanium exhaust tips and is meant to full the rear valence gap.


  • Nissan Skyline GT-R [BNR34] (1999, 2000, 2001, 2002)


  • 3.35 inch catback exhaust system w/ dual Titanium Tips
  • Electronic valve controls sound/power output
  • Made from SUS304 with RM Titanium Tips (treated to keep color not burn blue)
  • Closed valve idle reduces sound to 90 db (OEM is 94 db)
  • Manufactured in as the HKS Fuji Factory in Japan
  • Perfect exhaust for a powerful yet rare design


  • Type: Valve Controlled Catback
  • Material: SUS304 w/ Titanium Tips
  • Chassis Code: BNR34
  • Engine: RB26DETT
  • Tip Style: RM Titanium (treated to keep color even with high heat)
  • Tip Diameter: Dual x 90 [mm]
  • Main Piping Diameter: 85 [mm]
  • Idle Sound: 90 db (OEM 94db)
  • Pieces: 2 piece
  • Notes: Integrated Valve


To provide faster delivery and turn around time; Kami Speed ships products out from different warehouses throughout the United States. Usually averaging 1-4 business days for processing prior to shipping.

Depending on the package, we ship using different carriers according to the item's location, content, and size.

Freight truck & international items, will require up to 7 business days to ship due to size and logistics.

All orders made after 3:00pm ET will be shipped or processed the next business day.

Unless otherwise noted as "In Stock" or exact ETA. Special Order items have an ETA of 5+ weeks.

Orders over $500 will ship insured and over $1,000 with signature and insurance in order to guarantee delivery. Orders over $1000 may not be able to ship to a different address not listed as the billing address or confirm payment address from the form of payment used. Orders with suite numbers, different billing, or apartment numbers will require signature if valued over $100.

All international orders outside of the USA are subject to duties and taxes fees per your countries jurisdiction and determined by customs.
Kami Speed serves the right to ship using an alternative method if we see it fit, in order to expedite shipping and reduce your rate depending on product value.

Processing and logistics on in stock international orders can take up to 7 business days to process & ship.

In stock, non special order items can be returned within 30 days of the product arriving to your house or place of work.
Returns will NOT be accepted on Clearance Items, Final Sales, Special Orders, Opened, Installed, Incomplete, or Otherwise Used Products. In order to initiate a return, an RMA number must be requested and approved via e-mail. All returns will be subject to a 20% restocking fee minus complete shipping cost (roundtrip).

Any processed orders that have not shipped will incur a 6% cancelation refund fee unless the product was not available to ship within a timely manner. No fee will be incurred if used as store credit.

For complete details on our return policy, please see our Help and FAQ link under HELPFUL INFO.

WARNING: Operating, servicing and maintaining a passenger vehicle or off-highway motor vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle. For more information go to

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