Regular price $2,890.00 USD Sale price $2,890.00 USD Regular price $3,750.00 USD
Sale 22.93% $860.00 USD (22.93%)
In Stock!
SKU: hks31029-AT003
Product Description

The HKS Super Turbo CatBack exhaust uses the latest HKS technology in controlling the sound and keeping the volume low for a performance exhaust.  This exhaust is recommended for those with a high flow downpipe wanting to suppress the exhaust sound as much as possible.

Featuring full straight exhaust layout eliminates narrow points and improves exhaust gas flow, allows to enjoy a moderately sporty sound while eliminating unpleasant drone sound.

This is compatible with the Factory Exhaust Valve which can be switched between Sports and Normal Mode when desired.


  • Inspection-Ready, Noise Regulation-Compliant Muffler
  • OEM Exhaust Valve Compatible
  • Fully Adjustable
  • Slitted inner side improves sound silencing
  • Titanium Gradation Tail
  • Balanced size tail tips for bumber cut-outs


  • Toyota GR Supra B58 (2019, 2020, 2021, 2022, 2023, 2024)


  • For models without OPF type, Grade R
  • Uses Stock Actuator and Valve Control
  • 110mm tips
  • 85mm-70mm S304 piping
  • 87db noise at close
  • 111mm floor clearance on a stock GR Supra
  • 24.7kg or 54lbs

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 items, will require up to 7 business days to ship due to size. i.e. hoods, trunks, body kits, etc.

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

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 or apartment numbers will require signature if valued over $200.

All international orders outside of the USA are subject to duties and taxes 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.

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

Customer Reviews

No reviews yet