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Many controllers take up knee space or look bulky once installed. The TriFlex NEXT keeps things neat with a compact case only 1" thick that mounts flush against the dash. The included bracket and plug-in harness make it quick to install without splicing wires, and automatic leveling lets you mount it at any angle. Once in place, it looks clean and stays easy to reach for manual override when you need it.
Jerky stops disappear with proportional braking that matches the trailer’s response to how you brake. The TriFlex NEXT uses a 3-axis accelerometer to sense deceleration and apply the trailer brakes in sync with your vehicle. It automatically adjusts power on hills—adding when going downhill and easing off on climbs—so your rig stays steady and controlled. This setup works with 1 to 4 axles (up to 8 brakes) for both electric systems.
Every trailer feels different, and the TriFlex NEXT lets you dial in exactly what you need. Use the gray rocker switch to set gain in 0.5-point steps up to 9.9 volts, then fine-tune brake aggressiveness from 1 to 9 with the black rocker. Whether your trailer’s heavy or light, these adjustments help you find the sweet spot between confident braking and smooth deceleration.
The large LED screen makes it easy to read settings and error codes while driving. You can brighten it during the day or dim it at night so it won’t glare on the dash. It constantly checks system health and shows clear text diagnostics if something needs attention, helping you troubleshoot quickly and stay on the road safely.
The TriFlex NEXT guards your towing gear with built-in polarity protection, short-circuit defense, and continuous self-checks. If you’re stopped for a while, it enters sleep mode after five minutes to keep from draining the battery, then wakes up as soon as you hit the brake pedal. Every trip benefits from smart protection designed into the controller itself.
Alternate Instructions
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hi there, I'm Michael with etrailer.com. Today we're gonna take a quick look at this Curt Triflex Next Trailer Brake Controller. So if you have electric brakes or electric over hydraulic brakes, you're probably already aware that without a brake controller your trailer's brakes won't activate. So they're really not doing you any good. So you are gonna need to have a brake controller. Basically what a brake controller does is when you apply the brakes in your tow vehicle it's gonna send a signal through your brake switch to your brake controller.
The brake controller is then going to send an electrical signal out to your trailer's brakes so that they apply and help to slow down your trailer. There are several different kinds of brake controllers. There's different basic technologies and that sort of thing. Really your two main categories are you have a time delayed set up or you have a proportional setup. So with your time delay, essentially you set how much power you want applied to your brakes and then no matter if you're just tapping your brakes or really slamming on them in an emergency sort of situation, it's going to apply that same preset power each time.
So there are some downsides to that. It doesn't give you as much control. It can be a little aggressive sometimes when you don't need it to be. But then with your proportional setup it is going to apply your trailer's brakes with the same intensity as your tow vehicle's brakes. So if you're just lightly tapping on the brakes it's just going to lightly apply your trailer's brakes.
So proportional systems like this one are definitely my preference. I think they're a little bit more, give a little bit more finesse to your performance. There are some downsides to these. Typically, they are gonna be a little bit more expensive then your time delayed systems just because they do have more components to them. They've got an accelerometer in there that's going to sense the inertia of your movement so that it can apply the brakes proportionally for you.
And then another downside is typically because it does have that inertia sensor in there, or an accelerometer, it's going to have to be mounted in certain configurations to follow your direction of travel. And that's one benefit to this particular model is that it doesn't have to be mounted in any particular configuration. So you can basically mount it wherever you want. So definitely a benefit to this one over even other proportional systems. So for this model specifically, it does have the LED display that's going to show the amount of power output. You can adjust that with your rocker switches here. So very easy to access those. That's going to allow you to adjust between 10 different gain settings. So you can adjust the amount of braking power to suit your performance, the road conditions, the type of trailer you're towing, and the weight of your load. If you select a higher setting for a harder braking and a lower setting for more gradual braking, you do wanna make sure when you're getting that set up a good rule of thumb is to go just shy of where your trailer's brakes lock up. So test it out a few times. As you're going down the road you don't want your trailer's brakes to lock up. So get to that point and then come down just a little bit to get that fine tune where you need it to be. And then typically your gain is only gonna have to be readjusted when you're experiencing changing road conditions or if the weight of your trailer changes. So if you drop off your trailer load and you're needing to you probably need to adjust that gain there. It also gives you nine different load settings so that you can adjust how quickly the brakes will reach their maximum braking level. So if your vehicle takes too long to come to a stop, good idea to increase your setting by pressing the upper rocker switch. And then if it's stopping too abruptly you can decrease the settings as well. So you kind of fine tune it to your preference. We also have the pinch trigger manual override here. So that's within very easy reach, very simple to operate. What that's gonna do is allow you to apply your trailer's brakes without having to apply the brakes in your tow vehicle. So say for instance, if your trailer starts swaying you don't really need to slow down your whole setup you just need to apply the brakes in your trailer to kind of bring that back in line. So you can just push in on that trigger switch there and that will apply your brakes in your trailer without having to apply the brakes in your tow vehicle. This does have several different integrated safeguards to help protect your vehicle, the trailer, and the controller itself. It's going to run continuous diagnostic checks to alert you to any potential problems. It will help to minimize drain on your car battery by entering sleep mode. After about five minutes of inactivity it's gonna help keep your trailer's brakes from overheating by reducing power output when you're sitting for prolonged periods or prolonged stops. So if you're in traffic or something like that it's gonna help decrease the power so your brakes don't overheat. It's also going to defend the brake controller and trailer brake away system against any shorts and prevent positive and negative power reversal with its built-in polarity protection. This is gonna be very quick and easy to get installed. Again because you're not having to worry about the orientation, you can basically just get it mounted wherever it's gonna be most convenient for you to reach and access those controls. They've got this mounting bracket here. As you can see we'll just use the included hardware to get this mounted in place. And then basically our controller just slides onto that so it can be mounted flush with your dash. So very convenient to get that mounted. When you're considering where you can mount this, give you a few measurements here. You can see it is right about three we'll call it three and one eighth of an inch wide. Our length, we're right about four inches long. And our height approximately one inch overall. So keep that in mind and when you're deciding where you can get this mounted. Now as far as wiring goes, that's gonna completely depend on your setup. So there are some vehicles that already have a plug pre-installed from the factory that will allow you to just plug this right in there. If you don't have that on your vehicle, there are some kits available that will allow you to make that installation process pretty simple. But they are very vehicle specific. So I'd encourage you to use our vehicle fit guide here at etrailer.com. You'll select your year, make, and model of your vehicle. We'll let you know which products are confirmed to fit with your vehicle. So that's another route to go. If your vehicle isn't already pre-wired with a plug then I would recommend that. Otherwise, it is gonna take a little bit of doing to get this installed. If you don't already have a seven way plug at the back of your vehicle, I would highly recommend using our ETBC seven plug that's gonna provide wiring and everything to get you set up so that you've got that connection so that your trailer can connect to your vehicle. But overall, a really great option here. Like I said, I really like the proportional system. The way this is going to allow your trailer's brakes to be applied at the same intensity as your tow vehicle. I like that this model gives you that option to have more versatility and where you get it mounted. And so overall, I think this is gonna be a great way to go if you are needing a brake controller for your trailer's brakes. And that completes our look for today. Again, I'm Michael with etrailer.com. Thanks for watching.
Customer Satisfaction Score:
97% were satisfied with this product
3% of customers were not satisfied
Ratings & Reviews
Worked great and reasonably priced. Could not have been easier to install. I only towed with it a few times before I ended up trading that truck but this brake controller was a perfect purchase.
This was easy to install easy to calibrate and delivers great braking for my 5th wheel camper. I originally purchased a product from another company that just didn't work right. I ether had no trailer brakes or they grabbed really hard. It was similar in design to the curt Triflex so I was skeptical at first. I called etrailer to make sure and after checking with tech was assured it was the right application. I appreciate having someone to answer my questions and concerns. No need to purchase anywhere else.
Product installed in 5 minutes, tested and setup in 10 minutes. Shipping was fast. Superb value
Easy to install, works great!
Easy installation and configuration. Works flawlessly!
Brake controller is all plastic, screen is ok, broke after the second use, would not turn on/work and then randomly the brake lights started turning on when no one was in my vehicle and key was out. After 3 weeks etrailer warranted it and I got a new one.
Plug in that came with it will not work with the my 2022 Ford E350. The wires on the plug are not in the same position as the plug on the truck. Ended up using a plug that came with the KUV upfitter package. Product works once you make your own plug in to it. Not the purpose of plug and play.
Outstanding product is everything we expected from easy to connect and display in the truck. Great to have when necessary too.
Perfect fit plug'n'play for my Honda Ri dgeline.
Awesome controller
Very easy to install. Instructions were very clear products worked as intended very satisfied.
Ford 2013 F250.. This brake controller fit like a glove. I have a 2013 F250 and I finally found the plug behind the coin box on the dash. It fit just right and after I finally found where the factory plug was and routed all the wiring behind the dash it took about about 15 minutes to get everything working. I have use e-trailer for several projects and the shipping is amazing and they totally understand what they are doing. Thanks to all at e-trailer.
Jim S.
4/1/2015
works like is it suppose too, not any problems
Jim S.
4/1/2015
hooked right up and not any problems. 2013 F250 connectors were behind the coin
All the information I needed was on your site. Got the correct adapter cable and was able to just plug in the controller.
I’ve use the electric brake system several times over the last year. I was impressed at how easy it was to use, and how much safer it was when braking. It was easy to install and worked great
Easy to install, had no glitches. Replace an older brake controller.
Easy install and worked
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!
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)
Great brake controller for the price. Easy to install with the video. Customer service was very prompt and kind.
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.
Wiring adapter worked great, AFTER I re-pinned 2 out of 4 of the connections to line up with my 2022 Ford E-350 cutaway harness correctly.
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.
Once I figured out the Ford Wiring(was not plug and play) the install was simple. It was necessary to reroute the pins in the Controller Harness to match the E450 .
This controller is great when it’s working IE driving, controlling a trailer. But it never completely shuts off and if you don’t drive your truck or RV for a month you’ll find a dead battery. Ended wiring my starting battery to my house batteries so the solar keeps them alive but it’s still frustrating that it cost me a $250 battery.
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Kenneth T.
9/16/2017
Works great