1. Brake Actuator
  2. Dexter Axle
  3. Surge Brake Actuator
  4. Disc Brakes
  5. 2 Inch Ball Coupler
  6. 7500 lbs GTW
Dexter DX7.5 Drop-N-Go Brake Actuator - Disc Brakes - 2" Ball - Zinc Plated - 7,500 lbs

Dexter DX7.5 Drop-N-Go Brake Actuator - Disc Brakes - 2" Ball - Zinc Plated - 7,500 lbs

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Brake Actuator
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Dexter Axle Surge Brake Actuator - 099-175-20
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Use this corrosion-resistant actuator to synchronize your trailer brakes with your tow-vehicle brakes. Drop-N-Go auto-latch coupler automatically locks your coupler in place on 2" hitch balls. Designed for hydraulic disc brake applications. Call 800-298-1624 to order Dexter Axle brake actuator part number 099-175-20 or order online at etrailer.com. Free expert support on all Dexter Axle products. Guaranteed Lowest Price and Fastest Shipping for Dexter DX7.5 Drop-N-Go Brake Actuator - Disc Brakes - 2" Ball - Zinc Plated - 7,500 lbs. Brake Actuator reviews from real customers.
  • All Info
  • Reviews (14)
  • Q & A (133)
  • Photos
  • Why etrailer?

Dexter Axle Brake Actuator

  • Surge Brake Actuator
  • Disc Brakes
  • 2 Inch Ball Coupler
  • 7500 lbs GTW
  • Bolt-On
  • Electric Lockout
  • Straight Tongue Coupler
  • Dexter Axle

Use this corrosion-resistant actuator to synchronize your trailer brakes with your tow-vehicle brakes. Drop-N-Go auto-latch coupler automatically locks your coupler in place on 2" hitch balls. Designed for hydraulic disc brake applications.


  • Hydraulic actuator synchronizes trailer brakes with tow-vehicle brakes
  • Drop-N-Go coupler mechanism ensures easy, secure connection
    • Automatically seats around and latches onto the hitch ball, even when in closed position
    • Included pin secures ball in coupler socket - coupler lock sold separately
    • Low-profile handle is easy to pull up for release
  • Aluminum master cylinder is better at reducing corrosion than cast steel master cylinders
  • Rollers with grease fittings are long-lasting and provide smooth operation
  • Breakaway kit included
  • Zinc plating is corrosion resistant
  • Durable steel construction
  • Bolt-on installation
    • Bolt holes 3" apart on center
  • Made in the USA


  • Application: hydraulic disc brakes
  • Ball size: 2"
  • Mounting: 3" wide channel tongue
  • Capacity: 7,500 lbs
  • Maximum tongue weight: 700 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.

099-175-20 Dexter Drop and Go Brake Actuator - Disc brakes

Replaces Titan Model 60 Leverlock Trailer Brake Actuator for Disc Brakes - T47154107K, T47154207K, T47154007K

Item # 099-175-20

Customer Reviews

Dexter DX7.5 Drop-N-Go Brake Actuator - Disc Brakes - 2" Ball - Zinc Plated - 7,500 lbs - 099-175-20

Average Customer Rating:  4.9 out of 5 stars   (14 Customer Reviews)

Use this corrosion-resistant actuator to synchronize your trailer brakes with your tow-vehicle brakes. Drop-N-Go auto-latch coupler automatically locks your coupler in place on 2" hitch balls. Designed for hydraulic disc brake applications.

- 099-175-20

Anna was great at helping me confirm what I needed to order. I installed the Kodiak 10” disc brake kit, new lines and Dexter actuator with no trouble. I got rid of my rusty drum brakes that were a hassle to clean and maintain in salt water. Shipping was fast and my order was complete. I’d definitely recommend etrailer.com to friends!!

- 099-175-20

The hitch is great. Disc brakes vs the drums I had before make noticeably more stopping power. My one regret is that while there is a backing lockout of the surge brake via a solenoid valve, for high mountain trailering, the surge brake stays applied when you’re descending in low gear. I smoked my brakes coming down from 5,500 ft last week, expelling a decent amount of high temp red bearing grease. I guess if steep mountain roads are the norm, maybe an electric brake overhaul would have been better.

- 099-175-20

Works great! I wish I would have talked to a representative first. Bolt pattern didn’t match up with the old actuator, so I had to drill new holes. With my neighbors help got ur done in a couple hours. My fault. Thanks to etrailer for quick delivery as I needed to pull my boat out of the slip I was renting.

- 099-175-20

Great selection of products with detailed product descriptions and very fast delivery. The information on the site was very helpful in identifying the replacement brake actuator that I needed for my 17 year old trailer. Installed in 20 minutes!

- 099-175-20

Actuator is quality product. I was replacing a Tie Down 70E actuator that was 10 years old ( master cylinder and backup solenoid failed due to rust sediment buildup ?) Be aware that the actuator does not come with mounting hardware so save yours from old unit , also does not come with instructions-download from web. The only noticeable difference between the newer and the old unit was the backup sensitivity. The old unit needed the solenoid energized with just the trailer -the new unit didn’t need the solenoid energized with trailer and boat unless you were going up an incline(even with adjustment of the bolts joining the two pieces) Overall very satisfied-as a side note both Tie Down and Titan were bought by Dexter Axle

- 099-175-20

I have been ordering from etrailer.com for years and have not been disappointed. Their prices are great, they communicate the order status very well, and ship the products quickly. I have been having ongoing issues with my trailer brake pressure not relieving, thus applying the brakes continuously. This order was for a new actuator which I believe will correct the problem. I just installed the actuator and it fit as expected.

- 099-175-20

Outstanding service!

- 099-175-20

Great service and quick delivery!

- 099-175-20

Bailey was a great help and got me exactly what I needed!!

- 099-175-20

It was as described, haven't installed it yet

- 099-175-20

Actuator works great. Very smooth stop. Well built.

- 099-175-20

- 099-175-20

Product arrived just as described and packaged well!

- 099-175-20


Ask the Experts about this Dexter Axle Brake Actuator

  • Can the Titan Aero 6000 Surge Brake Actuator Be Repaired Or Should It Just Be Replaced
    For a Four Winns Boat Trailer with Titan Aero 6000 Surge Brake Actuator, I recommend replacement using the Titan Zinc-Plated, Leverlock Brake Actuator part # 099-175-20 which is ready to go as is and will be a great fit. The reason I recommend replacement is because of the availability of spare parts. Although we do have the Replacement Damper part # T4502000 and Replacement Master Cylinder part # T4395100 (Confirmed for Aero 6000), there are still several other smaller parts that could...
    view full answer...
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  • Replacement Actuator For Older Tie Down 70LC
    We have exactly what you are looking for. Based on my research your Tie Down 70LC has a 7000lb rating and uses a 2" hitch ball. If your trailer has drum brakes I recommend the Titan Zinc-Plated Brake Actuator - Drum - Multi-Fit Ball - Bolt On - 7,000 lbs # T43397007K and if you have disc brakes I recommend the # DM62VR instead. Both of these options will bolt on to your 3" wide channel tongue. The # DM62VR includes and electric lockout solenoid but the # T43397007K does not....
    view full answer...
  • Replacement Brake Actuator for Titan Ultra 70 Surge Brake
    A great replacement would be the Dexter DX7.5 Drop-N-Go Brake Actuator # 099-175-20 for disc brakes. If you have drum brakes the Dexter DX7.5 Drop-N-Go Brake Actuator # 099-175-00. There are currently no replacement master cylinders available for your actuator.
    view full answer...
  • 2005 Four Winns Replacement Actuator for Swing Away Boat Trailer
    The Dexter DX7.5 Drop-N-Go Brake Actuator # 099-175-20 would be a great choice for an actuator to replace the surge actuator on your swing away trailer. You may need a new flexible brake line replacement as well with the part # T0980100 as well.
    view full answer...
  • What is Needed to Allow Dexter Disc Brake Actuator to Back Up without Brakes Locking Up
    The Dexter DX7.5 Drop-N-Go Brake Actuator # 099-175-20 that you referenced has an electric reverse lock out which allows the brakes to deactivate when you go in reverse.
    view full answer...
  • How To Lock Dexter DX7.5 Drop-N-Go Brake Actuator While Not In Use
    The best way to lock and secure the Dexter DX7.5 Drop-N-Go Brake Actuator part # 099-175-20 while not in use would be to use a wrap-around coupler lock like the Blue Ox Trailer Coupler Lock part # BX88351. If you want to lock the trailer to the vehicle while not in use then you can use a pin lock like the etrailer Surge Brake Coupler Lock part # e98888.
    view full answer...
  • Surge Brake Actuator Replacement for Tie Down Model 66 with Electric Lockout
    Your Tie Down Model 66 can easily be replaced by one of our actuators. The Demco # 099-175-20 is for disc brakes, comes with an electric lock out, and has a 6k capacity.
    view full answer...
  • How to Convert from Hydraulic Drum to Hydraulic Disc Brakes on a Boat Trailer
    You should have no problems whatsoever installing a disc brake actuator with reverse lockout solenoid on your boat trailer. The reverse lockout solenoid will only add about 3" to the end of the actuator. I recommend the Dexter Zinc-Plated Brake Actuator w/ Electric Lockout part # 099-175-20. This actuator is rated for use on disc brakes, has a 7,500 lb gross trailer weight (GTW) rating, and will work with 2" hitch balls. In order to make sure this actuator will work for you, you will...
    view full answer...
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  • Surge Brake Actuators to Replace Atwood on Trailer
    The Demco Actuator part # 099-175-20 is a really great option for if you have disc brakes or if you have drum the part # 8605001. These can be welded on in place of your Atwood and in my opinion a better design than the Atwood surge actuators.
    view full answer...
  • Comparing Demco and Titan Disc Brake Actuators with Electric Lockouts
    That is a tough question to answer as both are excellent manufacturers with their respective pros/cons. In regards to brake actuators, they both make and manufacture them here in the U.S.A. and they both come with a one year warranty. In regards to differences, Demco makes a wide range of different trailer and towing products whereas Titan specializes more in trailer brakes. WIth that being said we have had more positive feedback from Titan products in regards to trailer brakes, actuator...
    view full answer...
  • Will Dexter DX7.5 Actuator Fit in Place of a Tie Down Model 70E Actuator
    If your trailer tongue is 3 inches wide and the mounting holes for your existing Tie Down actuator are 3 inches apart on center then Dexter Zinc-Plated Brake Actuator, Item # 099-175-20 (replacement for Titan 60) will fit. I have linked a video review of this actuator for you.
    view full answer...
  • 2005 Ranger Trail Boat Trailer Replacement Hydraulic Brake Coupler
    Was there any manufacturer info on the existing coupler? Any part numbers? Unfortunately, there isn't an existing database that allows me to look up which hydraulic coupler was originally used on your 2005 Ranger Trail boat trailer. This being said, the Dexter Axle DX7.5 Drop-N-Go actuator would work well if you have a 3 inch wide pole tongue and need a coupler compatible with a 2 inch ball. For disc brakes, use the # 099-175-20, or # 099-175-00 for drum brakes.
    view full answer...
  • How Does Breakaway Kit of Titan Model 60 Actuator Reset
    I spoke to my contact at Titan about resetting a Titan Model 60 actuator which is not the Dexter part # 099-175-20. You have to remove the cover and then carefully remove the spring inside. Then set the lever in the disengaged position and re-insert the spring.
    view full answer...
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  • Difference Between Model 60 Surge Trailer Brake Actuators that Fit Disc and Drum Brakes
    Trailer drum and disc brakes require different psi ratings so that's why the part # T47154007K can only be used on disc brakes. Drums usually need 1,000 psi whereas disc needs 1,600 psi. For a version of this coupler that is designed for drum brakes you'd want the part # T43329007K. Or you can change out the master cylinders to fit the application. For a Model 60 actuator like this the part # T4820000 is for disc and part # T4395100 is for drum. To convert either actuator would only...
    view full answer...
  • Replacement Bolt-On Disc Brake Actuator for Tie Down 70E
    There is a replacement that I recommend for the Tie Down 70E disc brake actuator, though you will want to verify that your mounting bolt holes are 3 inches apart on center and your tongue is a 3 inch channel. If they are I recommend the Dexter DX7.5 Drop-N-Go Brake Actuator # 099-175-20. This actuator has a 7,500 lb capacity, couples to a 2 inch hitch ball, and is designed for use with disc brakes like you need. I have added a link to a video review for you to check out as well.
    view full answer...
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  • Tie Down Model 70 Surge Brake Actuator Replacement Recommendation
    For a disc brake model with an electric reverse lockout solenoid you can use # 099-175-20.
    view full answer...
  • Difference Between Hydraulic Brake Coupler with Lockout and Without Lockout
    What a lockout on a hydraulic brake coupler does is prevent the brakes from applying when you back the trailer. An electric lock out is tied into the reverse lamp circuit on the vehicle so that when the vehicle is shifted into reverse the solenoid in the coupler is activated which prevents the trailer brakes from applying. If your boat trailer had free-backing brakes, you won't need a lockout because after being pushed a foot or so the brake assemblies disengage. For a 7500 lb hydraulic...
    view full answer...
  • Converting Boat Trailer Brakes From Surge Drum Brakes To Surge Disc Brakes
    If you are looking to use your Demco brake actuator you need to make sure it is compatible with disk brakes. Some actuators will only work with drum brakes because drum brakes do not require as much "pound per square inch" of fluid as a disk brake set up does. If it does not then you have to replace the actuator. I recommend Dexter DX7.5 Drop-N-Go Brake Actuator - Disc Brakes - 2" Ball - Zinc Plated - 7,500 lbs Item # 099-175-20. It is a bolt on application with the reverse lockout feature,...
    view full answer...
  • How to Bleed Brake Lines with Titan Model 60 Hydraulic Brake Actuator Without Electric Lockout
    The Dexter Brake Actuator part # 099-175-20 replaced the Titan 60 that has a master cylinder with a fitting at the end. The fitting is a 3/16 inverted flare where the brake lines connect to. You do not need an extra fitting when you use the actuator. If you ever need to replace the fitting, it is part # T4750300. I recommend Kodiak Brake Line for Single Axle trailers part # 18SI-BLKIT. The flexible line of the Kodiak kit has a thread size of 3/8"-24 and fits a 3/16" fitting like the...
    view full answer...
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  • Replacement Hydraulic Disc Brake Actuator To Replace Tie Down 70lc
    According to my research the Tie Down 70lc is a hydraulic disc brake actuator. They are no longer made but can definitely be replaced with another actuator. I recommend to use the Dexter DX7.5 Drop-N-Go Brake Actuator - Disc Brakes part # 099-175-20 which is also a low profile hydraulic disc actuator with an electric lockout like the Tie Down model. It has the included nice feature of automatically seating around and latching onto the hitch ball for convenient hook up. I have attached a...
    view full answer...
  • Do the Dexter DX7.5 Drop-N-Go Brake Actuators Work with Disc and Drum Brakes and How Many Axles
    The difference between the two actuators is the Psi output of them. Disc brakes require a higher pressure than drum brakes do. For disc brake applications use the Dexter DX7.5 Drop-N-Go Brake Actuator part # 099-175-20 and for drum brakes use part # 099-175-00. Both of these can be used with single or tandem axles trailers. They are both rated for up to 7,500 lbs. gross trailer weight and 700 lbs. tongue weight. Keep in mind if you do not already have one the Replacement Solenoid...
    view full answer...
  • Solution for Needing Replacement Shock for Atwood Actuator
    Since we can't get the Atwood replacement shock anymore that you mentioned your best option would be to replace the actuator with a more reliable one like the Demco # 8605001 for if you have a drum brake setup or part # 099-175-20 for if you have a disc setup.
    view full answer...
  • How to Choose Correct Hydraulic Disc Brake Actuator and Hubs for a Boat Trailer
    When it comes to the best hydraulic actuator one of our most popular options is the Brake Actuator with Electric Lockout # 099-175-20 from Dexter which has a weight capacity of 7,500 lbs. It is compatible with a 2" hitch ball and fits 3" wide channel tongues. To determine what is best for your application you can filter through the linked selection of disc brake actuators and choose the hitch ball size you will be using as well as the weight capacity needed and what type of mounting you...
    view full answer...
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  • Actuator Replacement Recommendation for Tie Down Model 70
    For a disc brake model with an electric reverse lockout solenoid you can use # 099-175-20. This would be a great replacement solution.
    view full answer...
  • Replacement Coupler Needed for Tie Down Engineering 66 Model Actuator
    I was able to find that your Tie Down Engineering 66 Model actuator fits trailer tongues that are 3"x3", 3"x4", and 3"x5". It is only compatible with 2" hitch balls but I was unable to find the mounting hole measurements. We do have a wide variety of actuators like the Dexter # 099-175-20 or standard couplers like part # DM12925. Since you say straight coupler I am not sure if you are looking for an actuator that doesn't have a drop or if you are looking for a standard coupler. If you...
    view full answer...
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  • Can Disc Brake Actuator be Connected With Elbow After Solenoid
    I don't see any reason why you can't connect an elbow to in the manner you are speaking of with a disc brake actuator like the Dexter DX7.5 Drop-N-Go Brake Actuator - Disc Brakes - 2" Ball - Zinc Plated - 7,500 lbs # 099-175-20. The shock in the actuator needs to be perfectly horizontal, of course, but there's no reason you can't attach a 90 degree elbow to ensure you can get the fit you need.
    view full answer...
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  • Troubleshooting Bleeding Brakes with Vacuum Brake Bleeder
    You shouldn't be experiencing issues with bleeding the brakes with a Vacuum Brake Bleeder, like part # PTW87030, after installing the Brake Actuator with Electric Lockout # 099-175-20. It sounds like you might have a clog somewhere in your brake line. What you will want to do is find the next closest fitting from the brake on the trailer and try bleeding the brake line from there. If it bleeds just fine then you know that you need to replace the brake line section that you just bypassed....
    view full answer...
  • Recommended Surge Brake Actuator For 2006 Ranger Trail Trailer
    I would be happy to make a recommendation for a replacement brake actuator for your 2006 Ranger Trailer Trailer, but I will need to know if your trailer has hydraulic disc or drum brakes. If your trailer has hydraulic disc brakes the Dexter DX7.5 Drop-N-Go Brake Actuator - Disc Brakes - 2" Ball - Zinc Plated - 7,500 lbs # 099-175-20 is a great choice that has is zinc plated for superior corrosion resistance, and will bolt on to trailer tongues that are 3" wide. If you have drum brakes...
    view full answer...
  • 2007 Ranger Trail Replacement Actuator for Tie Down Model 70
    Since we don't have a replacement master cylinder for your actuator you'd have to go with a new actuator. For a 7.5k disc brake model with an electric reverse lockout solenoid you can use # 099-175-20. This would be a great replacement solution.
    view full answer...
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  • Surge Brake Actuator Replacement Recommendation for Atwood Surge Coupler
    The Atwood surge brake actuators are the ones we get the most feedback on with issues. We have the Dexter actuator part # 099-175-20 which will work great as a replacement. This actuator is designed for disc brakes like you need, has an electric reverse lockout and can fit all ball sizes as well. Titan actuators are very reliable as well.
    view full answer...

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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Mike S
Written by:
Mike S

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