Navitas EZGO 72-Volt TXT/S4/L6 600-Amp AC Upgrade Controller Kit. part #25-115
Give your 72-volt EZGO TXT/S4/L6 a boost in performance. This 600A controller is ideal for lifted cars with large tires in hilly terrain or anyone who wants to go up to 25 MPH on stock 18" tires. The On-The-Fly Programmer * sold separately allows you to personalize your driving experience in real-time. Adjust your top speed, braking, acceleration, and battery driving range all with the turn of a knob. With the newly added Bluetooth feature, you can now turn your phone into a vehicle instrument panel. The dashboard app allows the vehicle's owner to remotely lock their vehicle, monitor usage and performance or notify their dealers with diagnostic information.
Navitas EZGO 72-Volt TXT/S4/L6 600-Amp AC Upgrade Controller Kit Fitment:
Fits any EZGO S4/L6/Shuttle/Cushman Electric Models with factory 72 Volt Controllers and AC motors.
Kit Includes:
- EZGO 72-volt EZGO TXT/S4/L6 harness for plug and play installation
600-Amp Navitas AC TAC2 controller - Mounting Plate
- On-the-Fly Programmer
Kit Features:
TAC2 controllers are IP65 rated
Cost effective improvement to increase the speed and power of a golf car
The Navitas app allows you to monitor the vehicle's performance
Built-in speedometer
Gear indicator (Forward, Neutral, Reverse)
One-click Car Lock Out feature
Live battery voltage, motor and controller temperature monitoring
Provides alerts that you can send directly to your technician/dealer by email
New "Cruise mode" for higher top speed (Up to 15% faster)
Speeds up to 25 mph with stock 18" tires
Lower Speeds = Greater Range
Bluetooth Programmable with:
OEM App
Dealer App
End User App
One Button Cart Lock-Out
The Navitas app is available for Apple® IOS and Android phones and tablets
Use your stock motor, solenoid and existing wiring
Plug and play installation, works with your existing motor and plugs directly into your carts wiring harness
Control your regen braking in forward and reverse for added safety when driving or backing down inclines
Use the "lock out feature" to lock in settings to control power and speed
Navitas App Features:
- Built-in speedometer
- Gear indicator (Forward, Neutral, Reverse)
- One-click Car Lock Out feature
- Live battery voltage, motor, and controller temperature monitoring
- Provides alerts that you can send directly to your technician/dealer by email



Please Note: The Navitas app is available for Apple IOS and Android phones and tablets

Frequently Asked Questions
Find quick answers to the most common questions about our parts, upgrades, compatibility, shipping, and installation support.
Are your parts compatible with my golf cart model?
Yes. Each product page lists compatibility for EZGO, Club Car, Yamaha, and other major models. If you’re unsure, our support team can help confirm the right part for your cart before you order.
Do you offer installation support?
Yes. Our support team is available to help you confirm the right part for your cart before you order, and we can attempt to provide guidance to locate the installation instructions or an installation video (if available). For complex installations, we recommend consulting your cart's manual or reaching out to a local dealer who may offer professional installation services.
How long does shipping take?
Most items ship within 24-48 business hours after the order has been placed. Parts may ship together, or in separate shipments from different locations based on availability and/or your shipping location.
What if a part doesn’t fit my cart?
If a part doesn't fit your cart, contact our support team right away. We'll help you identify the reason the part won't fit your specific model. We can then arrange a return or exchange at an additional cost to get you the correct part. Most compatibility issues can be resolved quickly, and we're here to make sure you get the correct part needed.
Do you sell complete golf carts as well?
Yes, we offer fully customized golf carts built to your specifications. Our team works with you to design and assemble complete carts tailored to your needs, whether you're looking for performance upgrades, custom aesthetics, or specialized functionality. Contact our sales team to discuss your custom golf cart project and get a personalized quote. You can also click here to see our current golf cart inventory.