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Titan Zinc-Plated Brake Actuator w/ Drop, Electric Lockout - Disc - 2-5/16" Ball - 20,000 lbs

Titan Zinc-Plated Brake Actuator w/ Drop, Electric Lockout - Disc - 2-5/16" Ball - 20,000 lbs

Item # T4750720

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Brake Actuator

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Shipping Weight: 79 lbs

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Titan Brake Actuator - T4750720
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  • Surge Brake Actuator
  • Disc Brakes
  • 2-5/16 Inch Ball Coupler
  • 20000 lbs GTW
  • Titan
  • Bolt-On
  • Electric Lockout
  • Straight Tongue Coupler
Surge-type actuator bolts over 3" wide trailer tongue and includes standard, heavy-duty coupler with 3" drop. Electric reverse lockout lets you back up without activating the trailer brakes. Features corrosion-resistant plating. Call 800-298-8924 to order Titan brake actuator part number T4750720 or order online at Free expert support on all Titan products. Guaranteed Lowest Price and Fastest Shipping for Titan Zinc-Plated Brake Actuator w/ Drop, Electric Lockout - Disc - 2-5/16" Ball - 20,000 lbs. Brake Actuator reviews from real customers.

  • All Info
  • Reviews (8)
  • Q & A (12)
  • Videos (1)
  • Photos
  • Why etrailer?

Titan Brake Actuator - T4750720

Surge-type actuator bolts over 3" wide trailer tongue and includes standard, heavy-duty coupler with 3" drop. Electric reverse lockout lets you back up without activating the trailer brakes. Features corrosion-resistant plating.


  • Hydraulic actuator synchronizes trailer brakes with tow-vehicle brakes
  • Electric reverse lockout lets you back up without actuating trailer brakes
    • Built-in shield protects solenoid valve from the elements
  • Unique roller design reduces resistance during telescoping to create straight-line movement
  • Sturdy, durable steel construction resists bending in jackknife situations
  • Standard, heavy-duty coupler with built-in drop
  • Breakaway kit included
  • Zinc plating provides corrosion resistance
  • Bolt-on installation


  • Application: disc brakes
  • Ball size: 2-5/16"
  • Drop: 3"
  • Mounting: 3" wide channel tongue
  • Capacity: 20,000 lbs
  • Maximum tongue weight: 2,000 lbs
  • 1-Year warranty

When you apply the brakes in your tow vehicle, deceleration occurs and momentum pushes your trailer toward the rear of your vehicle. With surge brake systems, the actuator is triggered as your trailer moves forward while the tow vehicle slows. The actuator telescopes, applying force to its master cylinder, which in turn supplies the necessary hydraulic pressure to engage the trailer's brakes.

Electric reverse lockout with solenoid is automatically activated when the tow vehicle is shifted into reverse. To use this feature, you must have a 5-pole flat, 6-way round or 7-pole wiring harness.

4750720 Titan Model 20 Actuator with 2-5/16" Ball, Drop Coupler - Disc Brakes - Solenoid Lockout and Cover - Zinc

Video of Titan Zinc-Plated Brake Actuator w/ Drop, Electric Lockout - Disc - 2-5/16" Ball - 20,000 lbs

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Titan Brake Actuator - Surge Brake Actuator - T4750720 Review

Today we're going to take a look at the Titan Bolt On Disc Brake Actuator for a 2-5/16 ball. It has a drop, includes the electric lockout and has a 20,000 pound weight capacity. This hydraulic actuator will synchronize your trailer brakes with your tow vehicle brakes. Basically, what happens is when you apply the brakes in your tow vehicle, deceleration occurs and the momentum will push your trailer toward the rear of your vehicle, so with the surge brake systems this actuator is triggered as your trailer moves forward, while the tow vehicle slows. This actuator will telescope, applies force to the master cylinder underneath, right in here and this in turn supplies the necessary hydraulic pressure you engage your trailer brakes. This one uses a unique roller design, if you can see the two rollers up here and two down here. This will help reduce resistance during the telescoping and create a nice straight lined movement.

If you notice, they do have grease Zerk fittings on each one for lubrication. This actuator does include the electric, reverse lockout which is a solenoid valve here that's mounted on the back of the master cylinder. This will let you back up without actuating your trailer brakes, and they have a build in shield you can see over it, which will protect that solenoid valve from any of the elements or from any damage. The solenoid valve does have two wires that you're going to need to connect to get it to actuate. This is a sturdy, durable steel construction which will resist bending in any jackknife situations. It has a standard, heavy-duty coupler. If you notice, it does have the built in three inch drop to it.

It is a zinc plating which provides corrosion resistance. It does include the breakaway kit. You can see here if I just unhook this chain. Basically, what the breakaway kit would be. You can see that this chain and it's connected to this lever, so basically, what you would do with this, it's a safety feature, you take this s-hook and you connect it to your tow vehicle.

In a situation if you ever have your trailer would detach from your tow vehicle, with this connected, it would pull this chain, which would activate the lever. That would activate the master cylinder which would apply brakes to the runaway trailer. This is a bolt on installation. You can see the holes on this side and over here. It's designed to bolt on to your trailer tongue. The application, again, this is for trailers with disc brakes.

Again, the ball size that this fits on is a 2-5/16 diameter ball. The drop, again, is three inches. Again, this will mount on a straight, three inch wide trailer tongue. The weight capacity on this actuator is 20,000 pounds and the maximum tongue weight capacity is 2,000 pounds. That should do it for the review on the Titan Bolt On Disc Brake Actuator for 2-5/16 ball with the drop, and the electric lockout in a 20,000 pound weight capacity.

Customer Reviews

Titan Zinc-Plated Brake Actuator w/ Drop, Electric Lockout - Disc - 2-5/16" Ball - 20,000 lbs - T4750720

Average Customer Rating:  4.4 out of 5 stars   (8 Customer Reviews)

Surge-type actuator bolts over 3" wide trailer tongue and includes standard, heavy-duty coupler with 3" drop. Electric reverse lockout lets you back up without activating the trailer brakes. Features corrosion-resistant plating.

- T4750720

Product appears to be in good shape even though the box was severely damaged. I have not installed it yet. 667663

- T4750720

Have not installed it yet but the service from etrailer is great. They have everything you need and the expertise to get you what you need the 1st time. 523209

- T4750720

Product arrived quickly and as expected. Product description is right on. Fit on trailer, works and looks great. 498234

- T4750720

Works Great. 470126

- T4750720

Product was what I expected. delivered as expected. 450129

- T4750720

This is exactly what wa advertised and arrived quicker than I thought, especially since it is during the holidays when shipping always takes longer. The only reason it doesn't get 5 stars is the packaging, the actuator really needs to be packed in something more ridgid that cardboard. My actuator arrived with the 2 pins on the cylinder bracket bent (looks like it may have been dropped during shipping). I didn't contact the seller as the last one that I ordered (from another vendor) arrived the same way and for me it is easyer to repair it that return it. 326606

- T4750720

Actuator arrived very quickly after order via UPS. Part was as described and the online instructions and manual for installation were extremely helpful. Thanks etrailer. I will use etrailer for all my trailering needs! 168793

- T4750720

The mounting tab was slightly bent in shipping so the installation was a little tough by myself. Just had to bend it back and needed four hands. The product overall is a direct replacement of the unit I am replacing so I am expecting it to function flawlessly. 66606


Ask the Experts about this Titan Brake Actuator
Do you have a question about this Brake Actuator?

  • Disc Brake Kit Recommendation for Boat Trailer with 6k Axles
  • Based on what you listed as having on your trailer axle the Kodiak Disc brake kit part # K2HR526D that you listed would be the correct kit. Since you said saltwater you might be more interested in the kit that has stainless steel rotors, calipers, and mounting brackets # K2HR526DS. You'll need to swap to a disc braker compatible surge brake actuator as well though since they require higher psi ratings than drum. For that the surge brake actuator part # T4750720 would work great as it...
    view full answer...

  • Is Lockout Solenoid Included With Titan Brake Actuator Coupler # T4750700
  • The Titan Zinc-Plated Brake Actuator, part # T4750700 you referenced does not have a solenoid included. There are three types of systems you can choose from. Either a system like part # T4750700 that has no solenoid, a coupler with manual lockout, or brake couplers with an electric solenoid lockout. If you are wanting a brake coupler with an electric lockout I recommend the Titan Zinc-Plated Brake Actuator w/ Drop Electric Lockout, part # T4750720. This has the same features as the coupler...
    view full answer...

  • Replacement Inner Slide and Hitch Ball Coupler for Titan Brake Acuator T4750720
  • The Titan Zinc-Plated Brake Actuator w/ Drop, Electric Lockout - Disc - 2-5/16" Ball - 20,000 lbs # T4750720 has a 1 year warranty. The Replacement Inner Slide for Titan Model 20 Brake Actuator with Drop and 2-5/16" Ball # T4490400183 is what you want to replace that cracked coupler.
    view full answer...

  • Recommended Hydraulic Disc Brakes for Dexter 7,000 Pound Axles
  • For the 7,000 pound Dexter axles on your 5th Wheel Camper, I recommend the Kodiak Disc Brake Kit # K2HR79E. This kit is designed for 7,000 pound axles, 16 inch and larger wheels and features an 8 on 6-1/2 inch bolt pattern. The kit includes 2 full brake assemblies (rotor-and-hub assemblies, cast iron calipers, caliper-mounting brackets and caliper-mounting bolts). You will just need to add the compatible bearings with # 25580 and # 02475 and for the grease seal # RG06-070. Then for...
    view full answer...

  • Parts Needed to Convert Trailer with 7,000 Pound Axles from Drum Brakes to Hydraulic Disc Brakes
  • An excellent brake kit for your 7,000 pound axles is the Kodiak # K2HR712. You'll need inner bearing # 25580 and outer # 14125A. Also seal # RG06-070. These disc brakes have a raw finish and an 8 on 6-1/2 bolt pattern. Since you have a tandem axle trailer, # T4830000 will be the brake line kit for you. If you're going to install electric over hydraulic brakes, the HydraStar # HBA16 is a what we recommend for an actuator. If your brakes will be just hydraulic disc brakes, then use...
    view full answer...

  • Replacement Titan Surge Brake Actuator for Boat Trailer with Tie Down Actuator
  • You certainly can substitute another brand of actuator on your boat trailer to replace the Tie Down unit on it now. Titan products are built to a very high standard and one of their compatible couplers will let you get the most out of your new brakes. Click on the link provided to see our main page for surge brake actuators. Use the filters on the page to select the coupler mounting type you need (such as a-frame or straight), ball size, weight capacity and disc or drum brakes. (The...
    view full answer...

  • Replacement Coupler Recommendation for Titan Model 20
  • How did the trailer become uncoupled? Was the latch not secured on the ball? If so then the coupler sounds like it needs to be replaced. For that we have the Titan Model 20 as part # T4750720.
    view full answer...

  • Replacement Master Cylinder Cap for Titan Model 20 Surge Brake Actuator Coupler T4750720
  • Titan Surge Actuator # T4750720 is their model 20 and for this unit's master cylinder you will use replacement cap # T4830601. On the page I linked you will find this and all other Titan replacement parts just in case you need other items in the future.
    view full answer...

  • Recommended Parts Needed To Rebuild Tri-Axle Trailer With EOH Brakes
  • We have many of the components that will work for you but we do not carry axles that would be big enough to handle the heavy load you said your boat and trailer weigh. I recommend finding a dealer locally to get the right axle for your trailer and boat. When they build the axles for you they should also install brake mounting flanges and spindles to match the other items recommended below. Since you mentioned 8,000 lb axles, I will use that figure for my recommendations for the other...
    view full answer...

  • Axle Ratings and Parts Needed to Convert to Disc Brakes for Trailer with Tandem 7,000 Pound Axles
  • As long as there is nothing wrong with your current axles there is no need to replace them. If your concern is because combined their capacity only equals 14,000 pounds that's not a problem because you have to keep in mind that part of the trailer's weight will be on the hitch. One of our most popular disc brake kits is the Kodiak # K2HR79E. It's for 7,000 pound axles, like yours and has a 8 on 6-1/2 bolt pattern. For the brake lines you can use # HS496-252. If you're converting...
    view full answer...

  • Will Reese Steadi-Flex Weight Distribution System Work with UFP Surge Brake Actuator A-160
  • From my research the UFP A-160 actuator cannot be used with a weight distribution system so you won't be able to use the Reese Steadi-Flex, part # RP66560. In order to use any weight distribution system I recommend replacing your actuator with an updated unit like the Titan # T4750720. The Titan works with disc brakes, has a higher capacity than your UFP, and even matches the same bolt hole dimensions. Since the straight-tongue trailer you also will need a pole tongue adapter to...
    view full answer...

  • Can the Titan Model 20 Brake Actuator be Used for Triple Axle Trailer with Disc Brakes on All Axles
  • You could use the Titan actuator # T4750720 for 6 brake assemblies. You might want to switch to a larger diameter brake line though. That will help with braking power and response time. You could possibly put on brakes on the third axle as long as it has brake mounting flanges already in place. Otherwise you would have to have flanges welded on. This is a precision job that requires a special jig and someone with experience in welding on flanges. I have included a link to the right that...
    view full answer...

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Info for this part was:

Written by:
Lindsey S
Expert Research:
Michael H
Installed by:
Jeff D
Expert Research:
Jameson C
Updated by:
Adele M
Expert Research:
Adam R
Updated by:
Sarah W

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