‘- Golf cart Speed Sensor with high speed magnet fit Club Car DS & Precedent 48V (IQ and I2 Excel electric 2004-up) Advanced Motor;- This high speed magnet speed sensor could increase your IQ golf carts speed by 4-8 mph without a loin torque, without replacing your gears, or any motor/controller upgrades;- Flip your tow / run switch off before installation (disconnecting batteries is recommended).- Easy to install: simply jack up the rear of your cart, remove your passenger side tire, remove 2 screws holding speed sensor to motor, and install new speed sensor;- Package include: 1X Club car IQ Speed Sensor with High Speed Motor Magnet (Note:this is a IQ High Speed Motor Magnet,it’s an update of the normal one). If you have questions regarding if your Club Car has a IQ system with ADC motor or a GE motor . The easiest way to tell is by checking the serial number prefix. If your serial numbers starts with: AQ, CE, FD, HD, PE, or PQ then you have a cart with a IQ system. You can also look at the motor controller part number. If your model number starts with “1510” then you also have an IQ system.