Yeah Racing have introduced the new Hyper Booster capacitor for speed controllers. The aluminium case capacitor helps deal with voltage sag during hard acceleration, with very low internal resistance the charge/discharge rate is very high making it perfect for touring car or drifters. The maximum voltage which this cap can take is 9V, making it able to help with voltage spikes or use with HV batteries. It comes wrapped in an aluminum case, ensuring proper cooling resulting in consistent performance.
Source: Yeah Racing