Take charge of your ideas with Probe Short Shifters. Reduce the throw of your stock gearbox with a Short Shifter. Changing your Probe Short Shifters is an effective upgrade. Short Shifters make changing gears more efficient and reduce 0-60, quarter-mile and overall lap times. A great first modification to your vehicle is a Short Shifter. Reduce the throw and have more go by switching to a Short Shifter.