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Roadmaster High Low Adapter for Tow Bars - 2-1/2" Hitches - 4" Rise/Drop - 10K GTW

Roadmaster High Low Adapter for Tow Bars - 2-1/2" Hitches - 4" Rise/Drop - 10K GTW

Item # RM-058-4
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RM-058-4 - 4 Inch Rise/Drop Roadmaster Tow Bar
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Make up for the height difference between your RV and towing system with RoadMaster's Hi-Low hitch receiver. Provides either an 4" drop or a 4" rise for high or low ground clearance. Call 800-298-1624 to order Roadmaster accessories and parts part number RM-058-4 or order online at etrailer.com. Free expert support on all Roadmaster products. Guaranteed Lowest Price and Fastest Shipping for Roadmaster High Low Adapter for Tow Bars - 2-1/2" Hitches - 4" Rise/Drop - 10K GTW. Accessories and Parts reviews from real customers.
  • All Info
  • Reviews (7)
  • Q & A (8)
  • Photos
  • Why etrailer?

Roadmaster Accessories and Parts - RM-058-4

  • Tow Bar
  • Hitch Adapter
  • High-Low Adapter
  • Roadmaster
  • 4 Inch Rise/Drop
  • Fits 2-1/2 Inch Hitch

Make up for the height difference between your RV and towing system with RoadMaster's Hi-Low hitch receiver. Provides either an 4" drop or a 4" rise for high or low ground clearance.


Features:

  • Allows for proper positioning of tow bar
    • Makes up for height difference between RV's hitch and towed vehicle's base plates
  • Can be used in the rise or drop position
  • Solid steel shank
  • Powder coat resists corrosion
  • Hitch pin and clip or hitch lock sold separately
  • Made in the USA


Specs:

  • Application: 2-1/2" x 2-1/2" trailer hitch receivers
  • Drop/rise: 4"
  • Receiver size: 2" x 2"
  • Tongue weight: 400 lbs
  • Gross towing weight: 10,000 lbs
  • Length: 13-1/2" overall
    • 7-1/2" From center of hitch pin hole to angled brace
    • 8-3/4" From center of hitch pin hole to center of pin hole
  • Pin hole diameter: 5/8"
  • Limited Lifetime Warranty


Dimensional Diagram

High Low Adapter Specs

Note: Designed for flat towing only. Do not use to tow a trailer.


Most tow systems require some sort of hitch accessory to either raise or lower the tow bar to an appropriate level. The "Safe Zone" for a motor-home-mounted tow bar ranges from 3" above level to 4" below. Car-mounted models must be absolutely level. Roadmaster's High-Low Drops will provide you with the necessary drop; simply flip the accessory over to achieve desired rise.



058-4 Roadmaster Hi-Lo Drop Receiver - 4" Drop/Rise






Customer Reviews

Roadmaster High Low Adapter for Tow Bars - 2-1/2" Hitches - 4" Rise/Drop - 10K GTW - RM-058-4

Average Customer Rating:  5.0 out of 5 stars   (7 Customer Reviews)

Make up for the height difference between your RV and towing system with RoadMaster's Hi-Low hitch receiver. Provides either an 4" drop or a 4" rise for high or low ground clearance.

- RM-058-4
by:

It does exactly what it says. It still looks good after a year. I tow a car behind my RV and although the angle of the tow bar was within the +/- 5 degrees recommended, the car was sitting at the high end of that. This adaptor moved the hitch 4" higher and is enough to make sure the car is always below the receiver.



- RM-058-4
by:

Well crafted and does everything claimed



- RM-058-4
by:

The hitch fit well!!! Including a pin would be good.



- RM-058-4
by:

Prompt delivery and solid construction



- RM-058-4
by:



- RM-058-4
by:



- RM-058-4
by:


7
7

Ask the Experts about this Roadmaster Accessories and Parts

  • Recommended Hitch Reducer from 2-1/2 Inch Hitch to 2 Inch with 5 or 6 Inch Drop for 2016 Ram 2500
    A high-low adapter like the Roadmaster High Low Adapter for Tow Bars - 2-1/2" Hitches - 4" Rise/Drop - 10K GTW # RM-058-4 is designed for use when flat towing which is pulling a vehicle behind a motorhome. The reason an adapter is needed is because tow bars that connect the vehicles need to be within 3 inches of level for safety. I've attached an article to assist. It sounds like you are looking for something for the back of your truck that allows for a drop for towing or accessories....
    view full answer...
  • Recommended Ball Mount with 4" Drop for a 2-1/2 Inch Trailer Hitch Receiver
    The Roadmaster High-Low Adapter part # RM-058-4 is designed for flat towing applications and is not rated for the tongue weight associated with straight pull towing. If you need a ball mount with a 4" drop then I recommending using the Curt Forged Ball Mount part # C45458. As long as you have a 2-1/2" trailer hitch receiver on your 2015 Chevrolet Silverado 2500 then this ball mount will work well for you. If you have a standard 2" trailer hitch receiver then you will want to use the Curt...
    view full answer...
  • Hitch Extension Recommendation for Clearing Spare Tire of 2012 Jeep Wrangler with Bike Rack
    Since your 2012 Jeep Wrangler would have a 2 inch hitch the adapter you'd want is the Roadmaster part # RM-070 instead as the one you mentioned is for a 2-1/2 inch trailer hitch. Then for a locking anti-rattle device we have the Anti-Rattle Device part # 63232 which would work well. It's a lock that holds the shank of the adapter tight to the hitch tube to prevent movement.
    view full answer...
  • Parts Needed to Use Equal-i-zer Weight Distribution System on 2-1/2" Receiver of 2021 Silverado 2500
    I have a solution for you, but you can't use the Roadmaster # RM-058-4 to tow a trailer; this high/low adapter is only suited for flat towing where there is not any tongue weight. Instead you can use a hitch reducer like the Gen-Y Hitch Reducer Sleeve - 2-1/2" to 2" - 5-1/2" Long # 325-GH-007 to make your 2-1/2" receiver on your 2021 Chevy Silverado 2500 into a 2" receiver that will work with your existing weight distribution hitch. You could also get a completely different shank that...
    view full answer...
  • Recommended Tow Bar Adapter with 6" Rise for 2-1/2" Hitch and Tow Bar with 2" Shank
    I may have a solution for you, but we do not have a 2-1/2" Rise/Drop adapter for flat towing with a 6" rise/drop. Since you've got about 3" up or down to work with when it comes to how level to the ground your tow bar must be, you can likely use the Roadmaster High Low Adapter for Tow Bars - 2-1/2" Hitches - 4" Rise/Drop - 10K GTW # RM-058-4. This adapter has a 4" rise/drop and would still likely keep you within the recommended 3" flexibility you have from completely level when it comes...
    view full answer...
  • Dingy Towing for 2017/2018 Toyota Corolla iM
    The 2017 and 2018 Toyota Corolla IM are both capable of being flat towed if equipped with a manual transmission. If they have an automatic it will have to be dolly or trailer towed. For a Tow dolly I recommend the Roadmaster Tow Dolly with Electric Brakes # RM-2050-1. For Flat towing it will require a few things to be added. The first is the Base Plate # RM-521195-5. I recommend this as its a direct connect base plate that doesn't require use of a cross bar. That means less parts to...
    view full answer...
  • Flat Towing a 2021 Chevrolet Colorado With a Tiffan Wayfarer Parts Recomendations
    The Roadmaster Direct-Connect Base Plate Kit # RM37VR will reuse the manufacturer hardware on your 2021 Chevrolet Colorado 4WD with neutral Transfer case. It does not require you to cut or grind on the frame like the Demco and etrailer options. This is why I recommend the Roadmaster over the others. You will want to measure the height of your current tow hooks and compare that with the motorhome's trailer hitch receiver height. I always recommend doing this ahead of time so that when...
    view full answer...
  • Recommendations for Flat Towing a 2018 GMC Sierra 1500
    Your 2018 GMC Sierra 1500 SLT is capable of being flat towed. It will require a few things to be added. The first is the Base Plate # RM-3177-3. This will replace the tow hooks that are on the front of the Sierra currently. I recommend this as its a direct connect base plate that doesn't require use of a cross bar. That means less parts to connect and a simpler hookup every time. You will want to measure the height of your current tow hooks and compare that with the motorhome's trailer...
    view full answer...

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Info for this part was:

Employee Jeff D
Installed by:
Jeff D
Employee Jameson C
Expert Research:
Jameson C
Employee Shelly K
Updated by:
Shelly K
Employee Wilson B
Written by:
Wilson B

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