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Car Product Reviews

Crown Kia of Dublin - STILLEN Performance Hi-Flow Air Intake Kit and Styling Front Splitter
Enthusiasm for the Kia Stinger GT remains high as consumers around the country continue to snap up this fantastic platform.  Kia has done an incredible job with the release of the twin turbo V6 3.3L Stinger GT.  Inspired by European styling with true muscle under the hood enthusiasts have been devouring these sedans as quickly as they can.  Who knew that a reasonably priced 4 door hot rod would be so highly sought after!

Crown Kia of Dublin - STILLEN Performance Cat back Exhaust and Styling Rear Diffuser

To keep the excitement level high on these cars Kia invited STILLEN to offer our parts through the North American dealer network at last year’s Las Vegas dealers meeting.  Since then we have been shipping kits around the country to dealerships looking to offer their customers an opportunity for added value through personalized customizations.  The latest dealer to increase the heart rate is Crown Kia of Dublin in Dublin, Ohio.  The team there selected a ceramic silver example to adorn with the STILLEN poly urethane front splitter, STILLEN poly urethane rear diffuserSTILLEN cat-back exhaust and STILLEN cold air intake.

The complete package of performance parts creates the GT400 package unveiled at the Kia Dealer Summit in 2019.

Crown Kia of Dublin - STILLEN Performance Hi-Flow Air Intake Kit and Styling Front Splitter

STILLEN® is proud to announce the GT400 package for the Kia Stinger. This engineered combination of Performance Air Intake and Cat-Back Exhaust System increases the horsepower output to more than 400* horsepower. In addition to the increase in power the air intakes and exhaust system combine to provide an exhilarating driving experience by making this great platform even more exciting.

*400HP claim is a calculation based on flywheel horsepower estimate

STILLEN® Kia Aftermarket Performance Products are positioned to sell through distribution with robust support for today’s Dealers. With over 30 years in business STILLEN® has a detailed knowledge of what it takes to create demand and equip dealers with the tools they need to successfully drive revenue reselling STILLEN® Products.


  • Increased horsepower and torque
  • Elevated enthusiasm and driving experience
  • Products supported by a limited lifetime warranty


  • Increased revenue for sales floor, parts department and service center
  • An exciting offer to customers to increase vehicle enjoyment
  • Made and shipped from USA ensuring Excellent Fulfillment Rate across the US
  • Easy bolt on installations utilizing factory mounting locations
  • Dedicated Dealer Services and Customer Service teams

STILLEN has allocated robust resources to ensure
“Top of Mind Consideration” by consumers.

  • Professional In-House Video Producers and Graphic Designers
  • Data Team Writing Product Descriptions to maximize SEO
  • Google Display Ad Campaigns
  • YouTube Paid Video Distribution
  • YouTube Search and In-Stream Ads

  • Facebook Paid Display Ad Campaigns
  • Facebook Boosted Product Post
  • Facebook Paid Video Distribution
  • Instagram Paid Display Ad Campaigns
  • Instagram Boosted Product Post
  • Instagram Paid Video Distribution


This Stinger GT Exhaust improves the sound and performance of the vehicle while still keeping everything looking original by utilizing the stock exhaust tips. In addition to reaching industry leading HP & TQ figures, while maintaining stock emissions components, we are able to keep the exhaust tone quiet and comfortable while cruising on the freeway.


  • 304 Stainless Steel Construction
  • Uses the Factory Tip Outlets
  • Greatest Incremental Horsepower gain: 30 HP @ 6000 RPM
  • Greatest Incremental Torque gain: 30 TQ lb-ft @ 3500 RPM
  • Authoritative Tone Under Throttle
  • Limited Lifetime Warranty
  • Made in USA


After many different prototype configurations STILLEN combined our multiple decades of experience with metal fabrication and poly-urethane manufacturing to produce a cold air intake that utilizes both processes as well as the factory ducting to produce an air intake capable of providing an additional 25 horsepower and 31 lb/ft. of torque.


  • Improved Throttle Response and Horsepower
  • Aluminum Mandrel Bent Intake Tubes
  • Includes Genuine Air Filter
  • Enclosed Filter Housing
  • Greatest Incremental Horsepower Gain: 25 HP @ 5000 RPM
  • Greatest Incremental Torque Gain: 31 TQ lb-ft @ 3800 RPM
  • Limited Lifetime Warranty
  • Made in USA



Here at STILLEN, our Q50 isn’t the only vehicle getting ready for SEMA in the STILLEN performance shop… We’ve also seen a beautiful blue 2009 Nissan 370Z stop by for a new set of STILLEN sway bars.

SEMA Bound 2009 370Z with STILLEN Sway Bars

SEMA Bound 2009 370Z with STILLEN Sway Bars

Slammed & Ready To Roll, Almost

As you can see from the photo above, this SEMA bound 2009 370Z includes a long list of sleek, aftermarket upgrades. None have a bigger impact on the look of the vehicle than the air bag suspension that is installed on this vehicle. While these look great, they can change the handling of the car a bit. To stabilize the car and improve the feel, the owner decided to stop by the STILLEN performance shop to get a set of STILLEN sway bars installed.


Made from aircraft grade steel and finished in a brilliant red powder coat, the durable and incredibly stiff STILLEN sway bars are perfect for reducing body roll and stabilizing your ride. Whether you’re cruising through winding country roads, blazing down the track or just daily driving your vehicle, you will enjoy a noticeable improvement in how your car handles, corners and in overall vehicle stability.

370Z Sway Bar Specs

  • Part Number: STILLEN 304375 sway bar kit
  • Includes Front Sway Bar: Yes
  • Includes Rear Sway Bar: Yes
  • Adjustable: Yes; 3 or 5-way adjustable
  • Finish: Red powder coat for added durability

See It At SEMA

If you’re going to be at SEMA, be sure to stop by to see it this 370Z person after you visit the STILLEN/AP Radi-CAL booth (booth #34273) and checking out the STILLEN Q50 in the lot. This vehicle will be on display in the Direct Lift booth (booth #10239).

STILLEN Sway Bars Installed on SEMA 370Z

STILLEN Sway Bars Installed on SEMA 370Z

Questions? Contact Us

If you have any questions about the STILLEN sway bars featured on this vehicle or any of the other 370Z performance parts we offer, please give us a call. You can reach our experts at (866) 250-5542. They will be happy to answer any questions you have and make recommendations to help you get the most from your vehicle!