HKS 17-20 HONDA CIVIC SI US CIVIC Si (70020-KH101)

Regular price $391.00 USD Sale price $391.00 USD Regular price $460.00 USD
Sale 15.0% $69.00 USD (15.0%)
Special order - Ships in 5+ weeks
SKU: hks70020-KH101
Product Description

The most powerful intake system, specifically built to fit a vehicle's engine area. HKS Racing Suction pushes the efficiency of air intake systems to the utmost. "Hyper Stealth Frame" outperforms the previous Super Stealth frame. Increasing the surface area of the air intake by 27% enhances air intake efficiency. The funnel's outside border is securely fastened to the aluminum back plate. The use of aluminum improves rigidity and durability greatly. The alumite treatment enhances the surface of the funnel and gives it a sleek black appearance. Suction pipe design for a certain vehicle. The angle and length of the pipe boost the induction efficiency. It provides quick reactions for NA engines and increased performance for turbocharged engines. With a standard suction system, induction air hits the corrugated portion of the hose, causing swirl and resistance. The carefully built pipe lowers the corrugated area and the gap inside the pipe to improve airflow. Replacing all relevant pieces between the HKS air cleaner assembly and the throttle (to the compressor housing on turbo cars) allows for reducing air intake limits and boosting air intake efficiency, offering a major improvement in engine responsiveness and performance. Exclusively for some vehicles only, a direct type Super Power Flow air cleaner assembly is offered. It ensures that air flows smoothly from the filter's entrance point to the throttle valve.


  • OEM Air Flow Meter Part Number: 37980-5BA-A01. This product is for vehicles sold in North America.


  • HONDA CIVIC SI 2D (2017, 2018, 2019, 2020)


  • Super Power Flow and Aluminum Suction Pipe Kit for CIVIC
  • HKS switched from the factory flexible rubber hose to aluminum pipe to improve air intake efficiency.
  • The appearance of the engine room is improved with a polished metal pipe.
  • Increase airflow across the entire RPM range.
  • Take pleasure in a distinct induction sound.

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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