Standard shocks are velocity-sensitive--the faster they move, the more damping force the shock applies. This allows the shocks to adjust to on- and off-road conditions, and these shocks work well in high-speed applications. But with speed comes high temperatures, which lead to shock fade. If speed is your thing, you might want to consider a larger-diameter shock or a shock with a remote reservoir that holds more oil. These shocks will help alleviate fading caused by overheating.