This is our top of the range mast and certainy one of the best performing mast in the market. We made it to have a very explosive response that makes it perfet for nasty onshore conditions accelerating the planing .It is a perfect mate for the expert surfer that can appreciate its characteristics. The MX 100 is extremely responsive ( higher reflex i.e more stable sail profile i.e better power control) and stable, and therefore a perfect choice in onshore typical conditions that are also gusty. The top and bottom halves of the masts are interchangeable allowing you to fine tune your sails.