Your Guide to Speed Code 4 and Golf Cart Speed Upgrades
Speed Code 4 works with Club Car Precedent (2004+) and Tempo (2018+) models equipped with Curtis controllers. Verify your controller model (e.g., 1510, 1515) for compatibility. If your cart has a different controller (e.g., an older GE model), Speed Code 4 may not be compatible, and you might need a controller upgrade.
No—Speed Code 4 is a factory option from Club Car, so it won’t void your warranty. It’s an approved performance tweak, not an aftermarket mod. However, always check with your dealer to confirm your specific warranty terms, as unauthorized modifications (like a High Speed Half-Pulse Magnet) can void it.
With Speed Code 4, your cart hits 19.6 MPH on flat ground with stock tires and a 48V system. Add larger tires for even higher speeds—20-inch tires can push you to 21-22 MPH. Speed can vary based on factors like battery health, terrain, and cart condition.
You’ll need a Curtis programmer (e.g., 1313 handheld) to flash the controller. Most dealers have one, or you can buy/rent online for $300-$500. You’ll also need a screwdriver to access the controller and your cart’s manual for reference. No other specialized tools are required.
Speed laws vary—some areas cap golf carts at 15 MPH on public paths, while others allow up to 20 MPH if the cart is street-legal (with lights, turn signals, etc.). Check local regulations before hitting the throttle, especially if you plan to drive on public roads or community paths.
Larger tires (e.g., 20" or 22") increase top speed by covering more ground per rotation but may reduce torque on inclines, making them ideal for flat terrain with Speed Code 4. They can also raise your cart’s center of gravity, so drive cautiously on turns to avoid tipping.
Technically, yes, but it’s not recommended. Combining both can lead to unpredictable performance—surging, reduced braking, and excessive battery drain are common issues. Speed Code 4 alone provides a reliable 19.6 MPH, and adding larger tires is a safer way to boost speed further if needed.
Speed Code 4 has a minimal impact on battery life when used within factory parameters. However, higher speeds can slightly reduce your range per charge (e.g., 5-10% less range) due to increased power draw. Ensure your batteries are in good condition and fully charged for optimal performance.
If your cart doesn’t reach 19.6 MPH, check the following:
You can install Speed Code 4 yourself if you have a Curtis programmer and basic knowledge of golf cart electronics—it takes about 10 minutes. If you’re not comfortable with the process or don’t have the tools, a golf cart technician can do it for you, typically for $50-$100 in labor fees.