This hoverboard doesn't have any unlockable upgrades.
Renegade is a limited hoverboard released with Subway Surfers World Tour: Venice Beach. 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. Like most of others limited hoverboards, it costs Coin 50,000. It resembles a purple skateboard, with a golden skull with wings painted on it.