Designed by former World Champion, Olympic silver medalist and G.O.A.T contender Sam Willoughby, the Siren Pro offers BMX racers unparalleled performance on any track. Lightweight and fast-rolling, the 120 TPI, tubeless-ready tire rails turns, smooths out technical straightaways, and provides insane grip on the gate and out of corners. - Supple 120 TPI shaped casing - Center slick design for gaining maximum speed - Super-narrow gaps in the center tread grip the start gate without flexing - Wider gaps on the shoulder provide max grip when cornering