Regular price $1,156.00 USD Sale price $1,156.00 USD Regular price $1,360.00 USD
Sale 15.0% $204.00 USD (15.0%)
In Stock: 2
SKU: hks31019-AN011
Product Description

Introducing the Silent Hi-Power Series 304 SS Cat-Back Exhaust System with Single Rear Exit by HKS®. Designed for those seeking a perfect balance of performance and refined sound, this cat-back exhaust system is a true standout. Constructed from premium 304 SS stainless steel, the system ensures exceptional durability and a brilliant luster that lasts. The 3.74" main tubing diameter optimizes exhaust gas flow, contributing to enhanced performance gains. The Silent Hi-Power mufflers, a hallmark of this system, deliver both high performance and a sporty appearance. What sets them apart is their ability to significantly reduce noise levels without compromising on power. This makes them an excellent choice for more mature automotive enthusiasts.

In specific applications, HKS has introduced the innovative "Silent Chamber" technology, which effectively mitigates lower-frequency noise that can often intrude into the cabin during cruising. By minimizing exhaust gas flow disruption and featuring a closed-end design, the Silent Chamber ensures optimal performance is maintained while eliminating uncomfortable noise. Upgrade your vehicle's exhaust system to the Silent Hi-Power Series and experience the perfect harmony of power, refined sound, and lasting performance. Embrace the sporty appearance, reduced noise levels, and overall driving satisfaction that this exceptional exhaust system provides.



  • NISSAN SKYLINE GT-R (1989, 1990, 1991, 1992, 1993, 1994)


  • The material is SUS304 for improvement of appearance and durability
  • Proven "Advantex* glass wool" (Continuous fiber glass wool)
  • Hollow hook and pressed flange for some vehicles to reduce weight
  • Redesigned the inner structure of the silencer to improve performance and appearance


  • Exhaust System Type: Cat-Back
  • Exhaust Tubing Material: 304 SS
  • Exit Location: Single Rear
  • Main Tubing Diameter: 3.74"
  • Exhaust System Sound: Moderate
  • Tip Quantity: 1
  • Tip Material: Stainless Steel
  • Tip Outlet Diameter: 4.72"
  • Tip Shape: Round
  • Tip Style: HP(TYPE-H)
  • Exhaust Series: silent Hi-Power
  • Pieces: 2
  • Sound Level Stock: 94 dB
  • Sound Level HKS: 97 dB
  • Idle Sound Level Stock: 69 dB
  • Idle Sound Level HKS: 75 dB

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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