DeMarini 2014 DXVXC NVS Vexxum (-3) BBCOR Baseball Bat. DeMarini souped up the engine, now you can hit the gas. The power of the new 2014 Vexxum NVS comes not from strength or speed, but from the of them combined. Employing a New Velocity System barrel design, this bat is now the lightest swinging aluminum barrel bat in our lineup. With your bat speed up, you generate power unlike ever before. The Vexxum NVS is at the top of its class, so step into the box and start your engine.