This hoverboard doesn't have any unlockable upgrades.
Daredevil is a type of hoverboard that protects from crashing for 30 seconds. When crashed, the hoverboard will explode and need to recharge for a few seconds before using again. It's in the shape of a daredevil's rocket, hence the name (or by the hoverboard's intense speed).
Daredevil hoverboards will have the "Speed Up" ability. All Daredevil hoverboards will automatically make you surf faster. The Daredevil is the cheapest hoverboard in the game that has a special power.