The HS Quad Rear is Large sized quad rear set designed by Hayden Cox. Measuring 4.2", this unique set of rears features Hayden's unique 80/20 foil with splayed tips. The top inch of the fin tweaks out toward the rail, creating a looser feel for the relatively large size template. Looking to turn your favorite Thruster set into a Quad? This pair of Quad Rears can be combined with any Futures front fins to suit your riding preference, board design and waves.