Carbon Composite Masts progressive mast thickness (20mm at the top reducing to 14.5mm at the bottom) which reduces drag for slightly improved top-end speed, glide and acceleration.
Still supremely stiff, these masts have a livelier feel than aluminum, especially through the maneuvers. The carbon mast is lighter too, with the center of balance closer to the board due to the tapered section.
I have the mast in San Diego if you are local, you are more than welcome to try before you buy.
$500
