Flat4 Throwdown

Flat 4 Throwdown presented by Whiteline Parts & Accessories

Flat4 Throwdown
Presented by Subispeed & FTSpeed

The Flat4 Throw Down will feature 10 chosen enthusiasts who will have the opportunity to put their builds and their driving skills to the test in conjunction with the AutoInterest’s HPDE event on Saturday, September 3rd. 10 established tuners will also have the opportunity to display their elaborate setups to see how well they stack up their times with one another. This is a large gathering filled with new and seasoned Subaru enthusiasts who can have the chance to interact with several attending vendors to spectate the event. However, attendees can also have the chance to participate in a Show and Shine, as well as a Street Prep Drag Race to test their power levels. Note that participant spaces are limited, so get your spot while you can.


Overall presenting sponsor is whiteline parts and accessories

Overall Presenting Sponsor: Whiteline

Whiteline is one of the most well-known establishments in the suspension industry. Their components are well-utilized from every day enthusiasts, to professional racing teams on a worldwide scale. Their mission is to develop a quality product that will improve the overall driving experience of your vehicle whether if its new bushings for your daily driver, to custom sway bars on your purpose-built race car. Today Whiteline continues to grow their catalog with a great variety of suspension components that will make your car drive better, handle better, and give you more confidence on the street or the track.

Show & Shine Presenting Sponsor: Seibon

Seibon is one of the carbon finer pioneers in the automotive industry, and have been designing and manufacturing quality carbon fiber interior and exterior upgrades for decades. Their components are well-known for their build quality, fitment, and strength, and will add value, performance, and aesthetics to your daily driver, customization to your weekend show car, or function to your purpose-built race car. Whatever you drive, give your car that race-inspired touch with a quality product from Seibon.

Show and Shine competition presented by Seibon

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