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CURT 51146 TriFlex NEXT Proportional Inertia Electric Trailer Brake Controller, Fully Adjustable, Low Profile, 2-4 Axles, Plug-and-Play

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$121.99

$ 57 .99 $57.99

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  • ADVANCED & PROPORTIONAL BRAKE CONTROL — TriFlex NEXT features a triple-axis, motion-sensing accelerometer that ensures highly responsive and smooth stops. The third axis provides dynamic power adjustments when navigating uphill or downhill terrains
  • CONTROL UP TO 8 BRAKES & TOW UP TO 4 AXLES — Controls up to 8 brakes, or 4 axles, and is compatible with low-volt, PWM, ABS, and cruise control
  • AUTOMATIC LEVELING & CALIBRATION — Eliminates the need for setup and provides peace of mind on the road. Built-in reverse-polarity and short-circuit protection add an extra layer of safety when towing
  • CUSTOMIZABLE TOW SETTINGS — Choose from 10 different gain settings and 9 load settings to adjust to your specific towing situation. The settings can be adjusted to accommodate different trailers and towing situations
  • LED DISPLAY AT A GLANCE — The full-text LED readout clearly displays ramp-up progress and power adjustments at a glance in 0.5 increments, making troubleshooting easily. The brightness is adjustable for seamless day or night-time use


Experience highly responsive and smooth stops with the TriFlex NEXT brake controller. Equipped with a triple-axis, motion-sensing accelerometer, it ensures precise braking performance. The third axis dynamically adjusts power when navigating uphill or downhill terrains, further enhancing control. Enjoy the convenience of automatic leveling and calibration, eliminating the need for setup and providing peace of mind on the road. Built-in reverse-polarity and short-circuit protection add an extra layer of safety during towing. Stay informed about your tow vehicle's voltage and trailer disconnect status through the convenient indicators. The clean and user-friendly interface offers a full-text readout and troubleshooting capabilities, simplifying operation and maintenance. The TriFlex NEXT brake controller offers exceptional control over 2-8 trailer brakes at a time (1-4 axles). Its adjustable settings effortlessly adapt to your unique vehicle-trailer configuration. Compatible with low-volt, PWM, ABS, cruise control, and electric over hydraulic brakes, its slim profile combines functionality with a modern aesthetic. Monitor your brake settings at a glance using the LED display that showcases power adjustments in 0.5 increments. The display also provides full-text diagnostics for easy troubleshooting. Adjust the brightness to ensure optimal visibility during day or night towing. Fine-tune your towing experience with the TriFlex NEXT proportional brake controller. It offers fully adjustable power and ramp time, allowing you to customize the settings according to your specific needs. Choose from 10 gain settings and nine load settings to achieve precise control. The LED screen clearly displays the ramp-up progress, and the brightness can be adjusted to match daytime or nighttime towing conditions. With versatile mounting options, you can install the controller anywhere in your vehicle at any desired angle.


timmie r williams
Reviewed in the United States on February 6, 2025
I purchased everything to plug and play this unit. I replaced a older controller with this. It works great...but it will not detect trailer and power on unless I unplug the power connector and plug it back in. Then it works fine until I unhook form the trailer. To get it going again I must unplug and replug. No idea whats wrong. everything looks good.
Lonnie Thomas
Reviewed in the United States on August 7, 2024
It's a good controller that works under normal conditions. If your vehicle isn't prewired, you might be getting the "short" message when sliding the manual switch. Don't panic. Curt is aware of this programing issue inside the controler. They will ship you a diode that needs to spliced into the red wire, free of charge. I got mine, spliced it in, no more issue.
El Toro
Reviewed in the United States on July 18, 2024
Installed in my 2024 Silverado and it works well with my travel trailer. Have been using it for about 4 months now with no issues.
William A.
Reviewed in the United States on July 15, 2024
Works good and pretty easy to install
Mark Johnson
Reviewed in the United States on March 26, 2024
Purchased and installed with gm factory harness. Could not get manual brake function to work. Called Curt, tech said it was my trailer ground.Spent more time and determined it was the controller.Ordered a new different manufacturer, in 5 min I had it installed and working. I am sure the unit I purchased was defective from day one. Wasted a lot of time and effort.Would never recommend the Curt brake controller.
Stanley B Hill
Reviewed in Canada on December 17, 2024
Works like a charm, plug and play
Ken Hutchinson
Reviewed in the United States on October 4, 2024
The unit is small and easy to install with a custom cable from Curt for my Honda Ridgeline. It is famously difficult to reach the mating plug on the Honda but that is not Curt's fault and installation was a breeze after that connection was made. I am new to towing so I have nothing to compare it to. But after making the setting adjustments as detailed in the manual the Ridgeline and the trailer work very well together.
Charles
Reviewed in the United States on January 4, 2024
Install was easy. My truck came with a pigtail already installed so all I had to do was connect the wires. I used spade connectors that way I can completely remove it if I want to but still have a solid and durable electrical connection. However I find that I never need to remove it as it is never in the way. It is so much thinner and overall smaller than older controllers that I'm used to.
B. Horne
Reviewed in Canada on April 19, 2024
Works with electric over hydraulic brakes .
Myra
Reviewed in the United States on September 12, 2023
Great controller for the money. The unit was scratched a little almost like it was used. This is a lot of money to spend on used items. I should have returned it but I use a trailer daily and just can't keep burning up my brakes. I would buy this again but next time I'll just go to ETrailer and pay the extra $15-$20. Also the double stick tape you get to mount the unit is garbage. It needs to be screwed to the dash.
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