This hoverboard doesn't have any unlockable upgrades.
Big Blue is the forty-third limited hoverboard in Subway Surfers. It is a limited hoverboard released with . Like any other hoverboard, it protects you from crashing for 30 seconds. When crashed, the hoverboard will explode and need to recharge for a few seconds before using again. It costs 50,000, just like most of others limited hoverboards.