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Roadmaster High-Low Adapter for Tow Bars Review

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Review of the Roadmaster High-Low Adapter for Tow Bars


Today we're going to review and install the Roadmaster High-Low four inch drop, part number RM-070. All right, here's where our tow bar, tow vehicle, and tow vehicle look like without the high-low adapter. As you can see, the angle on our tow bar is pretty significant. To determine the proper size high-low adapter, we're going to take our tape measure, measure from the hitch pin hole to the ground. We're right at 23 3/4 inches. Then if we go to our tow bar where it attaches here at the base plate, we're at 19 inches. A 4 3/4 inch difference so we'll need to add approximately a 4 inch drop to our receiver tube so we don't have more than an inch or two difference up or down from the receiver tube to our tow bar. Next we'll go ahead and remove the tow bar so we can install the high-low adapter.

Our high-low adapter for this application, a total of 15 inches long from the center of the hitch pin hole to the center of the shank hole for our tow bar is going to be 10 1/4 inches, and it's about 6 1/2 inches tall. This is a full steel, fully welded construction with a nice, black, powder-coated finish. It fits a two inch by two inch receiver tube and allows for a two inch by two inch shank. The high-low adapter is capable of up to 6,000 pound tow capacity and 200 pound tongue weight. Note the high-low adapter can also be used upside-down for applications where you need to raise hitch height. To install it we simply line up the shank with the receiver tube, line up the hitch pin holes, then install a new 5/8 pin and clip.

It does not come with the adapter. We'll be using our PC3 5/8 pin and clip. Now as you an see with the high=low adapter installed, we've completely changed the angle from the shank of our tow bar and where it attaches to the tow vehicle, back to where we attached it to the base plate, and the angle of our tow bar arms. Now from the center of the hitch pin hole, it's 19 1/2 inches and at our base plate attachment point we're at 19 1/4, giving us a quarter inch difference. That will complete the review and install of the Roadmaster high-low 4 inch drop, part number RM-070.


Info for this part was:

Employee Joshua S
Video by:
Joshua S
Employee Nicholas E
Test Fit:
Nicholas E
Employee Robert C
Test Fit:
Robert C
Employee Jacob T
Video Edited:
Jacob T
Employee Chris R
Video Edited:
Chris R
Employee Cole B
Installed by:
Cole B

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