HKS GTII7460 STK Bolt-On Turbo for Subaru Impreza WRX STi 08-14 & 15+ STi

Regular price $1,901.21 USD Sale price $1,901.21 USD Regular price $2,160.00 USD
Sale 11.98% $258.79 USD (11.98%)
Special order - Ships in 5+ weeks
SKU: hks11004-AF010
Product Description

HKS Sports Turbine Kit series utilize actuators which enable inexpensive turbine replacement.  This is a direct replacement turbo for you EJ257 Motor.


  • Subaru Impreza WRX STi (2008, 2009, 2010, 2011, 2012, 2013, 2014)
  • Subaru WRX STi (2015, 2016, 2017, 2018, 2019, 2020)


  • Factory Replacement Type Sports Turbine Kit for SUBARU EJ25 Single Scroll Turbine.
  • 360HP was the number we figured out as the practical maximum engine output of the stock EJ25 engine from various verification. To reach the optimized performance within this range, the turbine kit was developed. For further performance improvement, this turbine kit can be used with the upgraded pistons and connecting rods; so the engine output can be reached to 430hp.
  • The ball bearing turbine of this kit was originally designed by HKS. Enlarged turbine wheel increases air volume. The ball bearing can reduce response loss. Also, the bypass port was also enlarged to reduce load to the engine restricting the exhaust pressure increase at high engine rpm.
  • This turbine kit includes all necessary parts in order to install the kit such as an actuator, oil outlet pipe, etc. (There may be parts necessary to buy separately depending on type of the boost pressure controller.)
  • This kit can be used with any HKS product.

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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