2021 Supra SA 450 THE LEGEND CONTINUES. An excellent time on the water starts with the Official Towboat of the Supra Boats Pro Wake Tour — The Supra® SA™. This legendary performer includes 3,500 lbs of sub-floor ballast, FxONE Folding Tower, a competition hull and Swell™ Surf 3.0. Features may include: 3,500 LBS SUB-FLOOR BALLAST The Mega Velocity...