Happening in conjunction with our Labor Day Weekend HPDE at Pitt Race, the Flat4 Throwdown will be on site on Saturday September 3rd. FLAT4 THROWDOWN Hosted by SubiSpeed & FTSpeed Presented by Whiteline The Flat4 Throwdown, presented by Whiteline, is an event to find out who has the fastest flat-4 powered car around the track. Including: Time Trial Competition Show & Shine Vendor Mid-way Stop-light drag race Join us Saturday, September 3rd at Pittsburgh International Race Complex. Learn more at flat4throwdown.com