Videos are provided As a guide only. Refer To manufacturer
installation instructions And specs For complete information.
/2 - 8 Brakes
/Electric, Electric over Hydraulic
Item # C51130
Orders above $99 qualify for free shipping
Proportional brake controller automatically levels when mounted within a 90-degree vertical range and a 40-degree horizontal range. Includes digital display, 4 boost levels, reverse-polarity protection, and continuous diagnostics.
With a proportional brake controller, you can get heavy-duty emergency braking, general braking, or slow-to-an-idle braking for your trailer automatically. The intensity with which your trailer brakes are activated and the rate at which they are applied are dependent on the deceleration of your tow vehicle. This means that, unlike time-delay controllers - which send the same amount of preset power to your trailer brakes every time - proportional controllers are able to adapt to every braking situation differently. So, if you slam on the brakes in your truck, your trailer brakes will activate with that same extreme intensity. And if you merely slow down as you approach a red light, your trailer will gradually brake in the same manner. Just select a boost setting, set the power output level, and you're good to go.
As long as the Reflex controller is properly mounted according to the included instructions, it will sense - via an internal inertia sensor - how your tow vehicle brakes. This dual-axis, inertia-based sensor responds to the deceleration of your tow vehicle as you brake by signaling the controller to send out enough power to your trailer brakes so that they are activated with an intensity that matches. The result is uniform braking across your towing setup. No push-pull action - just smooth, proportional braking every time.
The above diagram shows the controls and components of the Curt Reflex trailer brake controller.
The Reflex offers 4 different load range (or boost) levels. These settings are designed to give you more or less initial power output based on your trailer's weight. The load range levels let you alter the sensitivity of the brake controller's internal sensor, thus increasing the initial power output to the trailer brakes to better compensate for weighty loads. To set the load range, press and release the button on the front of the controller until your desired level appears on the screen.
So, if you boost the initial power so that the sensor is more sensitive, your trailer brakes will activate with more intensity right off the bat. This means that they will also reach maximum braking faster simply because they will start out at that higher intensity. This is particularly beneficial if you are towing a heavy load because the intensity required to stop that load may be far greater than that needed to halt your vehicle. Therefore, sending out more initial power to the trailer brakes - and causing them to reach maximum braking faster - allows you to better control the trailer so that it doesn't push your tow vehicle before coming to a complete stop.
Once you set the load range level, you can adjust the overall power output by moving the thumbwheel on the side of the controller. This setting ranges from 0.5 (minimum output) to 9.9 (maximum output). This indicates the maximum amount of power that will be sent back to your trailer brakes when you apply the brakes in your tow vehicle. Optimum output should cause your trailer brakes to function effectively without locking up.
The Reflex offers advanced safety features to prevent damage to various components of your towing setup. When the Reflex is not in use, it will be in power-saving mode, reducing the power draw to minimize drain on your vehicle's battery. This power-conservation mode begins after 1 hour of inactivity and ends the moment your vehicle's brake pedal is pressed.
When you stop at red lights, or any time that your truck and trailer are at a standstill with the brakes applied for a prolonged period of time, the Reflex will reduce the power output to your trailer's brakes, preventing them from overheating.
If ever there is a time that you need to brake your trailer separately from your tow vehicle, the manual override lever is easily accessible. Pushing this slide engages the brakes on your trailer with full power.
The self-leveling feature of the Reflex ensures that the brake controller continues to function even as you drive up steep hills or through the mountains. Simply mount it in your cab at a vertical angle that is within 90 degrees, and the controller will level itself automatically. Make sure that the controller is also positioned so that the side-to-side angle is within ±20 degrees.
Installation is a snap. After mounting the Reflex unit in your cab using the included bracket, hardwire one end of the included pigtail harness directly into your vehicle. The other end plugs into the brake controller.
For even easier installation, a vehicle-specific wiring adapter (sold separately) is available for most newer trucks and SUVs. One end of the custom adapter plugs into your vehicle, and the other end plugs into the controller - no hardwiring required.
Note: If a custom brake control wiring adapter is not available for your vehicle, one of the following will be required:
20-Amp circuit breaker (9506P - sold separately) for 2- to 4-brake applications
30-Amp circuit breaker (38630 - sold separately) for 6- to 8-brake applications
See also etrailer.com's exclusive 7- and 4-way brake control installation kit (ETBC7 - sold separately) if you don't already have a 7-way plug at the back of your vehicle.
Video of Curt Reflex Trailer Brake Controller - 1 to 4 Axles - Proportional
Videos are provided As a guide only. Refer To manufacturer
installation instructions And specs For complete information.
Today we're going to review part number C51130. This is the Curt Reflex Trailer Brake Controller. This is a proportional designed brake controller which will activate your trailer brakes in proportion to your vehicle's braking action. It will automatically adjust the trailer's braking based on the deceleration of the tow vehicle. This does activate immediately so there's no pausing like with some of the time delay brake controllers. It does contain an automatic leveling ability.
It has an internal sensor which will detect any deceleration even if the controller is not mounted flat. When you install this it can be positioned at any angle vertically up or down 360 degrees full rotation pretty much. Horizontally there is a limit-its 20 degrees side to side. So this way 20 degrees and this way 20 degrees or 20 degrees this way, 20 degrees that way. So there is a limit horizontally.
It does have four load range levels. This button right here will get you your load range levels. Our boost settings it'll let you adjust your initial braking power and aggressiveness. It does have a dual access accelerometer which will ensure smooth stops. This brake controller does do a constant diagnostic check which will alert you to any potential problems.
A few integrated safe guards it has to protect the vehicle, the trailer or the controller is one it minimizes the drain on your car battery by entering a power conservation mode after one hour of inactivity. If it isnt used for one hour it will go into the conservation mode. It will help keep your trailer brakes from overheating by reducing the power output to them during prolonged stops and it will prevent brake controller and trailer brake away system against any shorts. It also has a built in polarity protection which will prevent any positive or negative power problems when it is installed wrong. The digital display right here will show you the load range settings and any air codes.
The button I mentioned is for the load range and also for calibration. Right here it has a built in-if I show you when I push it-it has a built in slide bar manual override which is used for emergency braking situations. It does come with the mounting bracket which can be slid on and installed. The top is the holes has mounting screws that can be used or it also has a double faced sticky tape that can be used. Also has a nice little card which will have a-it's a quick reference guide which will show you what some of the display would be indicating. This part is made in the USA and now what I want to do is connect it to a power source to show you what the display read out would look like. What I have here is a Curt Universal Wiring Adapter that's used to mount a Curt Brake Controller in a vehicle that might not have a factory brake controller port. On one end is the port that would snap into the Curt Brake Controller, the other end will be pigtails which I right now have wired to a power source. Basically right now I'm going to show you if we turn on the power as you can see it's flashing CL and what that means is it needs to be calibrated so what you would do is push and hold that button and when you hold the button once it's calibrated it'll come on and be a constant CL instead of it flashing. When you let it go it'll just show you the two dots. The two dots basically mean that the trailer is connected and you're ready to go. If it only showed one dot that would mean the trailer is not connected. Basically what you want to do is-it has four load range settings-our boost settings. Basically you just push this button-you can see load range one, load range two, three and four. Basically the load ranges would be when you put it in one that would be if you're towing a trailer that might weigh less than your tow vehicle weight. If you're trailer is going to be equal to the tow vehicle you would want to go to load range two and if the trailer's vehicle weight is 50% more than the tow vehicle you would want to go to three and then load range four would be if it's 100% greater than the tow vehicle weight. Once you find the load range you want to put it in-let's say one right there then there's a knob here on the side that you can turn it-you can see that it'll range from .5 all the way up to 9.9. That's the amount of brake output it would be. So in Load range one we're going to set it at let's say at 6.1 now it goes off and you're all set at load range one with a 6.1 setting. If you have an emergency braking situation as you push this manual override you can see the brake output increasing and if you go all the way it will do the 6.1 you have it set at. Those would be the settings you would do on your brake controller. The application for this that will work on trailers up to four axles or eight brake assemblies. It is designed to be used with an electric or electrical hydraulic trailer brakes and it does come with a limited lifetime warranty. That should do it for the review of part number C51130 the Curt Reflex Trailer Proportional Brake Controller. .
Average Customer Rating: 4.9 out of 5 stars (30 Customer Reviews)Proportional brake controller automatically levels when mounted within a 90-degree vertical range and a 40-degree horizontal range. Includes digital display, 4 boost levels, reverse-polarity protection, and continuous diagnostics.
by: Larry J Warren04/18/2014
It sure doesn't get much easier than that! First the shipping was upgraded, so the unit arrived really quickly. Installation was easy, but I did appreciate the additional information provided by etrailer in-case you did run into a problem. The product itself appears very well constructed and has a solid feel to it. Overall I am very happy with both etrailer and Curt Brake Controllers. Thanks for a great service. 125923
by: Dan J12/01/2014
Good product Good service Good price 162865
by: Mark A.04/06/2015
Although alot of people pick some controllers that are around $50 I highly recommend this certain controller. It is money well spent. Installation was a breeze about 10 minutes and calibrating was even easier with a push of a button. After hooking up my travel trailer I could tell the difference in my stopping power. I feel this product will protect my investment and keep my family safe during travels. A definite gold star rating 183502
This brake controller works great. I've used it pulling my dual axle MC trailer across the Cherohala skyway (lots of braking) & also hauling my 7000# travel trailer back & forth to Florida. I'd buy it again. 282493
by: Ron B05/23/2014
Great product, great price, truly excellent purchasing experience. I submitted my order on Monday hoping to be ready to pull my trailer with my new truck on Sunday. I received my brake controller on Wednesday because they were able to upgrade my shipping at no additional cost. Controller was so easy to install I was testing it on Wednesday night. I will recommend etrailer.com to everyone I know. 132186
by: Alvin H11/17/2016
I have not had the opportunity to install my latest purchase but I am extremely satisfied with all my purchases from etrailer as to the correct part being sent and full instructions for installation. Please keep up the good work and I am so glad for the free shipping of my purchases. Thanks, Al H 317361
by: Chris K10/05/2016
Product works very well with my trailer. Install was as easy as could be expected. The only issue I had was the adhesive pad I used to secure the controller mount gave out. I had to screw the mount in. Just plan on screwing in the mount to your dash and don't rely on the adhesive pad alone. 303543
by: Tom D01/12/2015
Very nice brake controller. Easy to read display and quick and Simple installation. Self leveling makes for easy calibration adjustments are quick and easy. The vehicle specific harness makes it a snap to install if your vehicle is pre wired with a tow package. 168646
These were so incredibly simple to install, it took about 10 minutes start to finish. The instructions were very well done and covered all the steps well. Fits well on the dash of my 2014 Ram 1500 and all the wires easily hide behind the panel. 149916
by: Rob C.04/06/2014
Very satisfied with product. Thank you for shipping so fast 123982
by: Pat M11/18/2016
Etrailers catalogue provided a complete & accurate description of the 8 items purchased. Placing the order by phone was fast & efficient. Items arrived within 4 working days, no tax no shipping charge. Professional all around. 320253
by: Glenn M.04/05/2015
I would like to thank Suzanne at etrailer for getting my controller to me on time. Easy installation and was able to pick up trailer this weekend. Works great and wiring harness made it a piece of cake. Thank you 183254
by: Cches Pence09/03/2014
I purchased the Curt brake controller and the wire harness to put the Curt controller in my 2014 Dodge Pickup. The instruction were clear. It took about 20 Minutes to install and it works great. 149881
Adding brake control wiring on my Traverse was a pain without a car hoist, but everything works perfectly. It is sure nice to feel the trailer brakes helping out down our mountain roads. 290459
by: Greg S.11/07/2013
The folks at etrailer went out of their way to get me the right parts the first time and they delivered ahead of schedule. I am very happy. 106583
by: Steve R08/11/2016
Had one in the truck i traded in so it was a no brainer to get the same one again. Great quality and easy to set up. Highly recommended. 282752
by: Daniel S.07/12/2016
Great write up, accurate and helpful. Product arrived in a matter of days. Very easy to install. Documentation was excellent. 270856
by: Larry M.02/08/2017
Works great on my 2010 pickup pulling a 16' enclosed trailer. Good products from a good company with quick service. 339868
Product arrived in a timely manner, easy installation, calibrated and working within minutes!! 251636
Good documentation. Quick and easy installation. Works as advertised. What more could one ask. 248447
by: Eric N03/15/2015
Easy. Plug and play. Did not require dealership anything. Thanks for your help. 178321
by: SHEM W.03/11/2016
NICE WELL BUILT PRODUCT, 10 MINUTE INSTALL WITH ADAPTER FOR MY 1993 FORD F250. 240607
by: Scott B08/07/2013
Performs flawlessly. Installation was click and go with the etrailer harness. 93678
by: Dennis R02/15/2016
super service, fantastic customer support & great products!! . Thanks. 237840
by: Gene M12/27/2013
Very easy to install and set the brakes. Instructions were adequate. 111286
Shipped fast, low price, easy install, works great. (2014 Ram) 189103
Installed and setup easy and works great on my 99 Ford F-150 305646
Works o k, instructions not clear without instruction sheet. 297322
by: Ray Robinson03/22/2016
Ease of ordering and price for actual p roduct 241289
Works good and it was priced good. 363289
Ask the Experts about this Curt Brake Controller
Do you have a question about this Brake Controller?
At etrailer.com we guarantee:
Highest quality brake controller for the best price.
Real product know-how.
Most detailed, accurate brake controller information available.
Information for this part was:
Installations, made easy.
Personalized service for life.
Trusted since 1946.
Info for this part was:
At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.