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Roadmaster High-Low Adapter for Tow Bars - 2" Hitches - 8" Rise/Drop - 10K GTW, 400 lbs TW
(1652 reviews)
Price: $215.40
In Stock
Roadmaster
Roadmaster High-Low Adapter for Tow Bars - 2" Hitches - 8" Rise/Drop - 10K GTW, 400 lbs TW
Part Number: RM-048-8
In Stock
$215.40
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- All Info
- Reviews (1652)
- Q & A (0)
- Photos
Roadmaster Accessories and Parts - RM-048-8
- Tow Bar
- Hitch Adapters
- High-Low Adapter
- Roadmaster
- Fits 2 Inch Hitch
- 8 Inch Rise/Drop
Make up for the height difference between your RV and towed vehicle with this hitch adapter. Provides either an 8" drop or an 8" rise. Solid shank provides strength and durability.
Features:
- Allows for proper positioning of tow bar
- Makes up for height difference between RV's hitch and towed vehicle's base plates
- Also lets you mount a bike rack, cargo carrier, or other 2" hitch accessory
- Provides either drop or rise for adequate ground clearance
- Constructed of sturdy steel
- Solid shank for suprerior strength and durability
- Resists rust and corrosion with black powder coat finish
- Hitch pin and clip or hitch lock sold separately
- Made in the USA
Specs:
- Application: 2" x 2" trailer hitch receivers
- Drop/rise: 8"
- Receiver: 2" x 2"
- Tongue weight: 400 lbs
- Gross towing weight: 10,000 lbs
- Length:
- 4-1/2" From center of hitch pin hole to angled brace
- 7-1/4" From center of hitch pin hole to back of receiver tube
- 10-1/2" From center of hitch pin hole to center of hitch pin hole
- Limited Lifetime Warranty
Note: This adapter is designed to flat tow a vehicle only. Do not use to tow a trailer. When using with a hitch-mounted accessory, such as a bike rack or cargo carrier, the tongue weight of your hitch will be reduced by at least 50 percent.
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 3" below. Car-mounted models must be absolutely level. This high-low adapter can provide you with the necessary drop or desired rise to achieve a level tow bar setup.
048-8 Road Master Hi-Low Hitch Adapter - 8" - 10,000 lbs GTW; 400 lbs TW
Installation Details
Customer Satisfaction Score:
94% were satisfied with this product
6% of customers were not satisfied
- Product did not meet expectations
- Wrong item was ordered
- Defective
Ratings & Reviews
4.9
1652 reviews
by:
Rob
07/07/2025
Great adapter to level the tow kit out that I bought from E-Trailer! Shipped the same week and arrived at the house along with the rest of the order. Has held up to multiple tows of the Ford F150 behind the bus.
Rob
7/7/2026
Still working.
Claire H.
7/7/2026
@Rob Thanks for the update, Rob! I hope your travels are going well!
by:
Van
06/10/2026
Fits well, seems well constructed. Its heavier than i expected, very solid. Haven't used it yet, but it is on the camper and ready to go. We have a LOD bumper on the Bronco, that is designed for towing and the adapter gets the tow bar even with the Bronco's tow points. The round D-Ring holes are 27 inches off the ground.
by:
Robert
05/18/2026
E trailer has been bery helpful. Great service and knowledgeable customer service!
Hitch is very solid and works well.
Hitch is very solid and works well.
by:
Michael
11/14/2024
Thank You all for getting it to me sooo quickly. Love the drop down receiver, and it’s built like a tank. Etrailer has taken care of me once again, Awesome Company !!!
Michael
11/15/2025
I bought this down hitch for my tow car when I upgraded to a Class A Motorhome. I can honestly say that after a year it is still working Awesome !
by:
Walter
05/20/2016
The product solved my problem by lowering the attach height on my motorhome making it level with that on the vehicle being towed.
Walter
5/21/2017
I feel that the design limit for the torque this attachment imparts on the motorhome trailer hitch exceeds the design limit of the motorhome hitch. A few hard stops seem to have bent the motorhome hitch a little. I am towing a 4k lb vehicle with a 2015 Winnebago Vista.
Rachael H.
7/5/2017
Thanks for the feedback. It is always that the lowest rated component of the towing system be the determining factor for any towing situation. I looked on-line and it looks like your 2015 Winnebago Vista could have been equipped with a hitch rated for up to 5K from the factory. Please confirm that the hitch is rated appropriately for the vehicle you are towing. Additionally a supplemental braking system like the Roadmaster Even Brake # RM-9400 is recommended. If you do have a braking system it may need some adjustments for more effective braking of your toad. I have also included a link to one of our help articles that explains all the individual components of a flat towing system for your reference.
by:
Myron D
07/12/2017
The only thing I have changed is to have an additional receiver welded on top to carry a bike rack. The drop was perfect to tow my 2016 Hyundai Elantra GT
by:
Jeffrey
03/21/2018
Although I just needed to shim it up to keep the wiggle down, its doing the trick with the bike rack. Still need to try it out with the camper when I head back out to work.
by:
Mike
08/16/2026
Perfect si!e to tow my jeep.
by:
Dan
08/03/2026
Just what I needed to finish my project today!
by:
Ralph
07/28/2025
This was just what I needed on my RV to raise up the tow hitch to be level with the connections on my towed vehicle.
by:
Philip Johnson
02/07/2013
Just received the Roadmaster 8" High-Low Hitch Adapter today and the quality looks awesome and etrailer was awesome to deal with super fast shipping and good communications, and I'm sure this is going to work just fine when I get ready to use it thanks etrailer.
Anonymous
3/4/2014
Have used this for a year now for my tow car and it works awesome and well built would highly recommend this to anyone needing one.
Patrick B.
3/6/2014
Thanks for taking the time to follow up with us, it's good to know the adapter is holding up.
by:
Gerry P
07/23/2019
Just used it this past weekend for first time. It worked great! No problems whatsoever. Drove three hours to the destination and three hours back. Definitely will continue to use. I needed a hitch that was leveled with my tow bars and this was perfect. I would highly recommend etrailer for their excellent products.
Gerardo P.
7/24/2020
Still working great.
by:
Clark B.
08/02/2017
I use a 4" drop down for my mobility scooter carrier. My SUV hitch was too high to allow me to run the scooter up onto the carrier. The drop down made the carrier hight perfect. The drop down is strong and very stable. Noe I can travel and be moble at my destination.
Clark B.
8/2/2018
The down is still meeting my needs and is serving very well.
by:
Tom S
05/13/2014
Just received the order - everything was perfect! Fast shipping and appears to be a great product. Fits perfectly and solves my towing height issue. Being used with Blue Ox products (much less expensive option, and rated for more weight).
Excellent value and customer service (called prior to my order, ordered via web, and received follow up).
Will definitely use them again should the need arise!
Excellent value and customer service (called prior to my order, ordered via web, and received follow up).
Will definitely use them again should the need arise!
Tom S.
5/13/2015
One year later and still very happy with my purchase as well as the service I had received. Great stuff!
by:
Kim
05/09/2025
I use this to level up my my 4' extension to the front of my jeep tow vehicle behind our truck camper. It has worked well for us.
by:
Louis
07/23/2025
The road master 048-8 drop/rise looked great and performed as expected. Service was excellent. I received the order earlier than I expected.
by:
Carl W.
03/22/2014
Needed in a hurry, but did not opt for higher priced shipping. Item was shipped same day, and arrived fast. Very satisfied. I had previously ordered a bike carrier and was pleased to return. Best prices and fasted shipping. Will continue to use for my RV needs.
Carl W.
3/24/2015
Great. Adjusted tow height and works fine.
by:
Steve
05/31/2016
Product was just as advertised and made my Class "C" RV hitch and 4WD towing setup exactly level. Hi/Low Extension was top quality. Very satisfied with the product and prompt delivery. I am a multiple time purchaser through "etrailer" and every experience has been top notch. Seller is highly recommended!! Do note that Hi/Low Extension extended overall tow setup an additional 10" and therefore also required the addition of safety cable extensions and a new longer wiring harness.
by:
Rick
06/11/2018
Great selection of hitch adapters. Just what I needed to lower a dirt bike carrier on a lifted truck. Shipping was fast and free.
Mike L.
6/12/2018
Be aware that the adapter has a 400 lb tongue weight capacity. This means that the dirt bike and the carriers combined weight cannot exceed 400 lbs.
by:
Greg B.
01/01/2015
Just what I needed - Bought a gently used Blue-Ox tow-bar to pull a recently acquired 1998 Honda Honda CRV with my 2005 Jayco Grayhawk. After installing the CRV baseplate (purchased from etrailer, another great buy, installed myself in about 45 minutes) the vertical alignment of the base plate connections and the RV's receiver hitch was 9-inches off. I found this hitch adapter, it arrived within a few days of ordering even when I ordered it less than a week before Christmas. A test tow around the neighborhood proved all worked and aligned great. etrailer team followed up, provided info on shipping status, all-in-all an excellent transaction.
by:
Tim
03/07/2019
This has worked well. Seems well built\sturdy. I needed it to match the bumper height of my lifted Jeep tow bar to my truck hitch. My truck hitch with my camper on was too low. The Jeep came up over the towbar and rear ended my camper after braking for a dip. This hitch makes the truck hitch the same height as the Jeep tow bar connection
by:
Bill
11/08/2023
Christy is a fabulous sales person. She took care of me like a pro. Everything fit perfectly or both holes lined up. I’ve towed a couple thousand miles with it. I couldn’t be happier. Thank you for the service. You’ll always be my go to for trailer parts and towing parts. Have a great holiday. Happy Thanksgiving and God bless.
by:
James G.
05/01/2018
I use this product as a means of lowering my motorcycle rack on the rear of my Class A motor home, thereby making the bike somewhat easier to get off the rack.
So far I have no complaints or criticisms, the 8" hi-lo adaptor does precisely what I wanted it to do.
So far I have no complaints or criticisms, the 8" hi-lo adaptor does precisely what I wanted it to do.
Mike L.
5/1/2018
Be aware that using an extender like the # RM-048-8 will lower the tongue weight capacity of your hitch by 50 percent. Because the load has been moved further away from the receiver, more leverage is being applied to the hitch.
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See what our Experts say about this Roadmaster Accessories and Parts
- Can 2018 Chevy Sonic with Automatic Transmission be Flat Towed Behind MotorhomeYes a 2018 Chevy Sonic with an automatic transmission can be flat towed behind a motorhome and we have the parts needed to do this. The first thing you'll need is a base plate kit confirmed as a fit for your vehicle with the Roadmaster # RM-523194-5. In addition to the base plates, you will also need a compatible tow bar, safety cables, lighting, and supplemental braking to flat tow your vehicle. The most popular compatible tow bar is the Falcon All Terain, # RM-522. This has non-binding...
view full answer... - Is There Hitch Adapter that Allows for Better Ground Clearance with Hitch Bike RackHey Rick, the Roadmaster High Low adapter part # RM-048-8 would work for your application but you should note that it cuts the tongue weight capacity of the hitch it's installed in by 50 percent so you'd need to verify that with the weight of your rack and bikes. I doubt it would be a problem though since Kuat racks are generally lighter weight. Which Kuat rack do you have?
view full answer... - High-Low Adapter for 2008 Country Coach Magna Motorhome Towing Mini Cooper SThank you for providing that information. Also, sorry you never heard back from your original question. With your receiver at 22" and a base plate height of 14-1/2" you need the Roadmaster High-Low Adapter for Tow Bars # RM-048-8. This has a drop of 8" putting you right in the middle of the safe zone which ranges from 3" above level to 3" below level.
view full answer... - Can a High-Low Trailer Hitch Adapter # RM-048-8 be Used To Raise up a Cargo CarrierThe Roadmaster High-Low Hitch Adapter, # RM-048-8, is only designed for tow bar applications. I do have another, more cost effective solution. You could use the Curt Multipurpose Ball Mount, # D210. Though it is designed to tow while carrying a cargo carrier or bike rack, you can use it to just carry a cargo carrier. The rise on the receiver is not as high as the High-Low adapter, but the receiver portion has a 350 lb tongue weight.
view full answer... - What are the Dimensions of the Roadmaster 8 inch High - Low Hitch Adapter for Towing My 2004 JeepThe length from the center of the hitch pin hole to the angled brace is 4-1/2 inches. The measurement from the center of the hitch pin hole to the center of the receiver pin hole is 10-3/4 inches.
view full answer... - Parts Needed To Flat Tow a 2024 Ford Escape Since the 2024 Ford Escape is unchanged from the 2023 I see no reason you would not be able to use the Roadmaster Base Plate # RM77GR on the Hybrid trims. I recommend using the Roadmaster Nighthawk Tow Bar # RM-676 and the Accessory Kit # RM-9284-2 to connect your Escape. You will also need a Charge Line # RM-156-25 to prevent your battery from being drained down while towing. I do recommend using either the Air Force One # DM26VR if your motor home has actuate brakes or Stay-IN-Play...
view full answer... - Recommended Flat Towing Solution For 2022 Ford Bronco With Modular Bumper and WinchI do see the winch and mount you found is for attaching to the Ford Modular bumper on your 2022 Bronco. For this I recommend the Roadmaster Direct-Connect Base Plate Kit # RM92ZR. Roadmaster has one of the best reputations for quality and testing among all the brands we carry. Here is a list of the other components that will be required for flat towing your Bronco. Roadmaster Nighthawk All-Terrain Tow Bar # RM-676 Roadmaster Accessory Kit for Nighthawk Tow Bars # RM-9284-2 Brake Buddy...
view full answer... - Parts Needed to Flat Tow 2013 Chevy Spark with Manual TransmissionI am happy to help you with the parts needed to flat tow (or dinghy tow) your 2013 Chevy Spark with manual transmission. Starting with a base plate, I recommend a kit that features removable arms which will let the Spark keep more of its normal appearance when you're not towing it. Roadmaster kit # 523174-1 has such twist-lock arms that you can see in the linked photo; once you remove them the car's appearance is back to normal. The Falcon Tow Bar # RM-520 is a perfect fit with these...
view full answer...
- Hitch Adapter to Raise Height of Cargo Carrier for Batter Ground ClearanceWe can help you with a 2-inch hitch adapter that will give you a height rise for better ground clearance with your CargoPod hitch cargo carrier. I suggest the Roadmaster 2-inch High-Low Adapter # RM-048-8. The Roadmaster has a solid steel shank for strength rather than a hollow one like the Malone # MPG544 and it gives you a full 8-inches of rise. This too will reduce your hitch's rated capacity by 50-percent, the same as the Malone, and it also shares the same 400-lb tongue weight (TW)...
view full answer... - Recommended Flat Towing Parts for a 2026 GMC Sierra 1500You sure can Joe, and congrats on the new truck! You will need a high/low adapter that's a bit taller though since your Sierra is lifted. Something like the 8" item # RM-048-8 or the 10-1/4" item # RM-048-10 depending on how low to the ground your motorhome's hitch is. A high low adapter is going to bring your tow bar level with the baseplate on your Sierra. You'll want them as close to level as possible so you don't put extra torque and pressure on the tow bar arms. This is especially...
view full answer... - Lowering 2 Inch Trailer Hitch Receiver when Using a Motorcycle RackFirst you need to know that the use of an adapter to extend, reduce, raise, or lower the receiver will reduce the tongue weight capacity by 50 percent. So if the motorcycle rack you have is completely supported by the trailer hitch then the combined weight of it and the bike cannot exceed the reduced tongue weight capacity. So for example if the combined weight of the carrier and bike is 350 pounds then the hitch would have to have a tongue weight capacity of at least 700 pounds. In this...
view full answer... - Parts Needed To Flat Tow a 2023 Ford Escape Hybrid and Choosing Where To Have Everything InstalledWe have a link to find installers in your area on our product pages. On the Roadmaster Direct-Connect Base Plate Kit # RM77GR page you can find the link "Locate installers near me" just below the product images which will allow you to see the installers in your are by entering your zip code. I do recommend checking their reviews and contacting to discuss the parts you are looking to install as every installer is different and can have different rates. Here is a list of the other parts I...
view full answer... - Recommended 7" High to Low Hitch Adapter for a Flat Towed VehicleSure Joe, you'll just want the the Roadmaster High-Low Adapter for Tow Bars # RM-048-8. This adapter has 8" of drop (or rise whichever way you want to use it), measures 10 1/2" long, and has a nice 10K capacity.
view full answer... - Towing a Trailer with a Coupler that is Higher than the Trailer Hitch on a Jeep WranglerAll you need is a ball mount that allows you to tow the trailer level. You can measure for the amount of rise needed to select the correct model. A ball mount with rise is needed when the trailer coupler is higher than the hitch receiver on the vehicle. Have the trailer and the Jeep Wrangler parked on level ground. Disconnect the trailer from the Jeep. Measure from the ground to the top of the hitch receiver opening. Then use the trailer jack to make the trailer level and measure from...
view full answer... - Can a 2015 Chevrolet Sonic LTZ With Automatic Transmission Be Flat Towed?While your 2015 Chevrolet Sonic LTZ with an automatic transmission can be flat towed I would recommend using a Dolly # DM9713045 since you are required to stop and run the engine when towing(see owners manual) for extended periods of times. This dolly also fold up which is great when you do not have a lot of storage area. If you do not mind the additional steps while flat towing here is a list of the components you will need. Roadmaster Direct-Connect Base Plate # RM-523173-5 Roadmaster...
view full answer... - Recommended High Low Adapter for a Yakima Stagetwo Bike RackIf you've already got an extension that pushes the rack out to clear your spare tire you aren't going to be able to add a second adapter. We don't recommend using two hitch adapters at the same time because not only does it reduce the weight capacity of the hitch even more (more than the 50% from using one adapter), it can also be dangerous for other motorists. I'd recommend just using a taller high low adapter like the Roadmaster High-Low Adapter for Tow Bars # RM-048-8 which has 8"...
view full answer... - Parts Needed For Flat Towing a 2015 Jeep Wrangler JK With Nilight Aftermarket Front BumperI tried reaching out to Nilight to both verify their front bumper for your 2015 Jeep Wrangler JK is both safe for flat towing and the dimensions of the tabs. They could not provide me with either so you will want to first verify if your bumper is safe for flat towing and the dimensions of the mounting tabs. We have the 1" Wide # RM-035-1 and 3/4" Wide # RM-035 adapters which are designed to replace the ends on the Roadmaster tow bars like the Nighthawk # RM-676. Both the adapters above...
view full answer... - Hitch Adapter to Raise a Cargo Carrier up 8 for Clearance in a Low VehicleI can provide you with an option but you probably aren't going to be hitting the 200 lb. mark you are hoping for, especially after taking the weight of the cargo carrier into consideration. You can use the Roadmaster High-Low Adapter # RM-048-8. The catch is that when using an adapter that extends your hitch, which is what an adapter to gain rise does. You will reduce your hitches tongue weight rating by 50%. Obviously, how much weight that leaves you with depends on the hitch that you...
view full answer... - Recommended Parts For Flat Towing a 2023 Ford Ranger XLT 4X4I completely understand your confusion Jim. As someone who has worked with all the different manufacturers over the years here are the best components which I recommend for you to use. First you will need the Roadmaster Base Plate # RM-524459-5 for your 2023 Ford Ranger. This will connect to your motorhome with the Roadmaster Nighthawk All-Terrain Tow Bar # RM-676. Do understand you may need one of the High/Low adapters from the list below as the tow bars need to be within 3" of level....
view full answer... - Recommended High Low Adapter to Allow Tailgate to Open While Towing Micro Minnie WinnieDan, I would need to know how much room you need to be able to open the tailgate with the trailer attached but you could theoretically use the Roadmaster High-Low Adapter for Tow Bars # RM-048-8 which would lower your receiver 8" likely giving you the clearance needed to drop the tailgate.
view full answer... - Complete Flat Towing Set Up for 2018 Chevy Silverado 1500There are a number of parts needed in order to flat tow your 2018 Chevy Silverado 1500; I will list the parts for you below. - Base Plate Kit: Roadmaster MX Base Plate Kit # RM-3176-3 - Tow Bar: Roadmaster Falcon All Terrain, Non-Binding Tow Bar # RM-522 - Safety Chains: RoadMaster 68" Single Hook, Coiled Safety Cables # RM-643 - Wiring Kit: Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit # RM-15267 - Battery Disconnect: Roadmaster Automatic Battery Disconnect with Switch # RM-766 -...
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- High/Low Hitch Adapter to Keep Nighthawk Tow Bar RM-677 Level for Best OperationRoadmaster does specify the 3-inch safe zone for tow bar height differences at the motorhome and toad ends. Really any tow bar will perform better when it is level since there will be less arm tube friction. A level tow bar will also endure less mechanical stress and it will put less stress on the base plates, the towed vehicle's frame and its suspension. Since you have invested in the Nighthawk # RM-677, one of the best tow bars available, I recommend you protect your investment and...
view full answer... - Hitch Adapter and Bike Rack Recommendation for E-Bike and Flat TowingTo replace your Roadmaster High-Low Adapter # RM-048-8 I recommend using this replacement shank from Gen-Y: - Replacement Shank for Gen-Y Adjustable Ball Mount # 325-GH-404 I like this option because it's more heavy-duty than pretty much every other adapter, plus it has a receiver above the shank so your bike rack will be at a higher location for better clearance. Then for a bike rack I recommend using the Swagman E-Spec # S94FR and then using the Swagman Ramp and Bridge # S32YR to...
view full answer... - Which High/Low Adapter for Flat Towing Lifted JeepYou'll need a high/low adapter to bring the tow bar within 3 inches +/- of level. The adapter you need will depend on the height difference between the base plates and the receiver on the motorhome/tow vehicle. Roadmaster offers several different adapters: • For a 2 inch rise/drop, use # RM-072-2 • For a 4 inch rise/drop, use # RM-070 • For a 6 inch rise/drop, use # RM-048-6 • For a 8 inch rise/drop, use # RM-048-8 • For a 10-1/4 inch rise/drop, use # RM-048-10 I've linked to an article...
view full answer...
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Gwendolyn Y.
7/15/2025
Hello again Rob! I'm glad that I ran into another one of your reviews. I've been curious to know how does one go about getting a bus. Do you just have to be in the "know" or are there special places that sell used ones?