To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
Most brake controllers stick out and get in the way, but this one mounts nearly flat. At just 1" thick and 4" long, it tucks cleanly into your dash while keeping the controls easy to reach. The under-dash box style keeps it low profile, and the bright LED display shows settings and alerts without glare thanks to adjustable brightness and a night mode option.
No more jerky stops or push-pull motion when you brake. The TriFlex NEXT senses how your tow vehicle slows down using an internal 3-axis accelerometer, then applies the trailer brakes with matching intensity. That means smoother, even braking across your whole setup—light brake pressure gives gentle stops, while hard braking brings both vehicles down quickly and safely.
Dialing in your trailer’s braking is quick with two rocker switches. Set gain anywhere from 0.5 to 9.9 in 0.5-point steps to match your trailer’s weight, then use the load control (1–9 scale) to adjust how quickly that braking power comes on. It’s easy to tweak for different loads or conditions until it feels just right—firm enough for control but smooth enough to avoid lockups.
Built-in safety features keep everything protected while towing. Continuous diagnostic checks alert you to any wiring or brake issues, while polarity protection prevents shorts or reversed connections. After 5 minutes of inactivity, the controller automatically enters sleep mode to minimize battery draw, waking instantly when you press the brake pedal again.
Hookup is simple—just connect the included harness to the factory brake control port under the dash and plug the other end into the controller. Automatic leveling lets you mount it at any angle using the supplied bracket and hardware. Once connected, you’re ready to tow up to 4 axles (8 brakes) with smooth proportional control right from your dash.
If you don't already have a 7-way plug at the back of your vehicle, take a look at our exclusive 7- and 4-way brake control installation kit (ETBC7 - sold separately).
Alternate Instructions
Customer Satisfaction Score:
94% were satisfied with this product
6% of customers were not satisfied
Ratings & Reviews
Works perfect on my 2024 1500 Silverado
This unit took less than 10 minutes to install and works flawlessly with my Grand Cherokee while pulling a Travel Trailer. Plus its low profile design made it easy to install by the hood release so I don't have a big box and display on top of my dashboard. Great product at the right price. Highly recommend this brake controller and etrailer.
Works well. The connector I got from e trailer which fits other older model Audi’s wasn’t listed to fit the 2024 Audi but fit perfectly. The Curt Triflex is an easy to use brake controller. Highly recommend!
Great customer service and awesome product. Arrived on time and had no issues with installation. Will definitely order from etrailer again.
Totally plug and play on my 2019 Silverado 1500. No issues.
Great brake controller for the price. Easy to install with the video. Customer service was very prompt and kind.
Arrived as planed and was much smaller then my old clunky one. The custom cable harness was easy to install. Finding a flat spot to mount the controller took the longest to find the perfect spot. I gave a five stars because every was as it said. (Plug and play)
Very good electric brake controller. Lots of technology for monitoring potential problems, and pulling the trailer. The adapter cable makes installing unbelievably easy. Cable hooks directly into factory plug with the other end connecting to the end on the controller. It comes with self adhesive tape to hold mounting bracket in place to drill holes. Once installed, the controller can be removed with easy release feature, it you choose. Delivery was quick and price was really good, as usual.
As advertised
It really was plug & play
Very easy to install. Highly recommende d.
Great product, fast shipping. great to do business with.
It was easy to install and easy to use on my GMC Sierra.
Decent price, super easy install, works good
Works great and was just an easy plug and play on a ‘24 Silverado.
I installed this on my 2024 GMC Sierra Pro pickup; truck came with a factory installed wiring harness, but no brake controller. This was an easy 'plug and play' installation of this Curt brake controller, as all fittings were there for a direct connection and installation - no splicing or tracing wiring around! Once hooked up to my trailer, it was easy to dial in my preferred brake settings and off we went! Very pleased with the ease of installation, look of the controller tucked below my dash, and controls and function. Highly recommended!
Does just what I need it to and connection and setup was super simple.
Took a while to figure it out. Have a 2003 Dodge van. Had to tow in package but didn’t have any wiring factory installed other than for the seven way. Paul it was great identifying what I need and sending it to me. Thank you very much.
bought this for a friend. installation was straight forward with the custom harness, display lit up and functioned as it's supposed too. Haven't hooked to a trailer yet but should work just fine.
Very easy installation for this item.
This is a new model of the Curt TriFlex brake controller. As a replacement for the previous unit, it was nice to be able to install it without rewiring. The new model has a more modern style digital display that is easier to read and less annoying. The button controls are a bit less obvious than the previous model, so it takes a little effort to figure out how to adjust the system. Overall, I think it's a better unit that the previous models.
Did not work with my 2025 Tahoe. The quick connect had to be cut off and spliced. Worked great when I figured this Part out, this style shouldn’t be listed as compatible with the 2025 and newer models.
Easy to install. The double sided stick tape didn’t work so ended up attaching via the provided screws. Didn’t want to put holes in the trim but oh well.
Says compatible for my tundra and didn’t even have the pigtail adapter. You would think with the cost it would be included.
Need to pick my trailer up tomorrow and now need to buy a completely different brand.
Shipping was super slow ordered 9/16/2026 didn’t receive till 9-24/2026 seem ridiculously late
Very happy!
Two days after I ordered it, it was in my hands and only took about 30 minutes to install.
And it doesn’t look hokey like some aftermarket parts.
I put it below the steering wheel on the right side, which leaves 4 to 5 inches from my calf… plenty of room.
Thanks
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