HKS Hi-Power 409 FOR 1990-1999 TOYOTA MR2 SW20 3S-GTE (hks31006-AT008)

Regular price $620.50 USD Sale price $620.50 USD Regular price $730.00 USD
Sale 15.0% $109.50 USD (15.0%)
In Stock!
SKU: hks31006-AT008
Product Description

This series of mufflers are designed as a cost-effective street sports muffler. The muffler is composed of high-quality SUS304 Stainless Steel for the Main Muffler and Exhaust Tip while the other parts are made of SUH409 Stainless Steel. Inspired and designed from endurance and GT racing in Japan, HKS developed its Hi-Power 409 Exhaust system for both turbocharged and naturally aspirated applications. HKS has incorporated this new race-inspired offset muffler and piping design into many street applications, which offers a greater flow and higher-PRM power gains due to the less restrictive design. This is achieved by eliminating unnecessary bends for the straightest exhaust path.


  • TOYOTA MR2 (1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999)


  • Tip Diameter: 120mm
  • Piping Diameter: 75mm
  • Style: HP (High Power 409)
  • Main Material: Stainless steel commonly (SUH409), Gray on schematic
  • Tail/Silencer: High-Quality Stainless Steel (SUH304), White on Schematic
  • Noise Level (Near Exhaust): 97dB (OEM 94dB)

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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