The SX10 presents the highest performance pro race mast. This is our lightest SDM mast with the fastest reflex response for ultimate performance for turbo-charged acceleration, an extremely wide wind range, and lightweight handling. The SX10 SDM are designed from 100% top grade and high tensile strength pre-preg carbon. This technology ensures optimum control of resin content and resin distribution throughout the laminate. The carbon layup features and inner layers of 45-degree carbon weave control torsion and quick reflex response. The outer layer of carbon has a 90-degree orientation for the highest possible strength. The SX10 mast features a progressive constant curve which means that the bend curve is constant but the base is stiffer than the top. This provides optimal sail dynamics allowing the bottom of the sail to generate power, and the top of the rig to quickly release power. The mast is the spine of the rig, so to get the best possible performance out of your rig, choose SX10.