SUPER73 Re-Signs as Official Electric Bicycle Partner of Progressive American Flat Track for 5th Consecutive Season. 🎉 By providing a range of electric bicycles and the necessary parts and accessories, SUPER73 will help streamline day-to-day event operations for AFT staff throughout the 2025 season. This partnership may also see the Mission AFT SuperTwins Champion receive a premier model at the season finale on September 13, 2025. 📖: Read the full story at AmericanFlatTrack.com/News #ProgressiveAFT #ventura #flattrack #motorcycle #FlatTrackRacing #americanflattrack #super73 #ebike