Roadmaster 048-2
2-inch reversible rise or drop
Solid-steel 2-inch receiver adapter rated for up to 10,000 lb towing and 400 lb tongue weight, within the complete towing system's limits.
Roadmaster 048 Hi-Low Hitch Adapters: 2–10-Inch Rise & Drop
When a motorhome's receiver sits above or below the connection point on a vehicle's tow bar, a Roadmaster Hi-Low adapter can change the receiver height to help bring the towing setup into alignment. The heavy-duty 048 series offers five reversible heights, each with a solid-steel shank and the same published maximum ratings. The correct choice depends on measured height difference and the entire towing system—not on how large an adapter looks.
How to select the right rise or drop
Measure on level groundWith both vehicles on a level surface at their normal operating ride heights, measure from the centre of the motorhome receiver to the tow bar's required connection height.
Choose the reversible offsetThese 2-inch receiver adapters can be installed in the permitted rise or drop orientation. Roadmaster's flat-towing guidance calls for the tow bar to remain within 3 inches of level.
Check the weakest ratingThe 048 series has a 10,000 lb maximum tow rating and 400 lb maximum tongue load. Every connected hitch, tow bar, extension and vehicle must remain within its own lower applicable rating.
Not a general-purpose heavy-trailer extension: Roadmaster's 400 lb tongue-weight limit applies even though the adapter has a 10,000 lb tow rating. Do not use the adapter with a trailer exceeding the permitted tongue load. Confirm receiver engagement, pin clearance, ground clearance and the complete towing geometry.
Roadmaster 048-series hi-low hitch comparison
Each model fits most standard 2-inch receivers and provides the stated vertical offset in either approved direction. The height figures describe the difference between receiver centres—not the overall length of the steel shank.
| MPN | Rise / drop | Receiver | Max tow | Max tongue | Product |
|---|---|---|---|---|---|
| 048-2 | 2 in | 2 in to 2 in | 10,000 lb | 400 lb | View |
| 048-4 | 4 in | 2 in to 2 in | 10,000 lb | 400 lb | View |
| 048-6 | 6 in | 2 in to 2 in | 10,000 lb | 400 lb | View |
| 048-8 | 8 in | 2 in to 2 in | 10,000 lb | 400 lb | View |
| 048-10 | 10 in | 2 in to 2 in | 10,000 lb | 400 lb | View |
Compare the five adapter heights
These photos and product links identify the exact Roadmaster MPNs on NewRVParts. Choose the shortest offset that achieves the specified tow-bar alignment while maintaining safe ground clearance.
Roadmaster 048-4
4-inch reversible rise or drop
Solid-steel 2-inch receiver adapter rated for up to 10,000 lb towing and 400 lb tongue weight, within the complete towing system's limits.
Roadmaster 048-6
6-inch reversible rise or drop
Solid-steel 2-inch receiver adapter rated for up to 10,000 lb towing and 400 lb tongue weight, within the complete towing system's limits.
Roadmaster 048-8
8-inch reversible rise or drop
Solid-steel 2-inch receiver adapter rated for up to 10,000 lb towing and 400 lb tongue weight, within the complete towing system's limits.
Roadmaster 048-10
10-inch reversible rise or drop
Solid-steel 2-inch receiver adapter rated for up to 10,000 lb towing and 400 lb tongue weight, within the complete towing system's limits.
Common Hi-Low hitch questions
What's the difference between 048-4 and 048-8?
Both have the same 2-inch receiver interface and published 10,000 lb tow / 400 lb tongue ratings, but 048-4 changes the connection height by 4 inches while 048-8 changes it by 8 inches. Use the measured tow-bar height, not extra capacity, to choose.
Can a Roadmaster 048 adapter be flipped upward?
Roadmaster designs the 048 series for rise or drop installation as needed to level a compatible towing arrangement. Follow the mounting and clearance instructions for the exact system.
Does a 10,000 lb rating allow any 10,000 lb trailer?
No. The manufacturer also specifies a 400 lb maximum tongue weight, which is a separate limit. The tow vehicle, receiver hitch, tow bar or other components may impose a lower rating.
Can I put an 048 adapter in a 2½-inch truck receiver?
Not directly. These models have a 2-inch input shank and a 2-inch output receiver. Roadmaster has separate 058-series options designed for certain 2½-inch receivers. Verify the correct input size.
Is the offset measured by the overall adapter length?
No. The 2-, 4-, 6-, 8- and 10-inch model sizes refer to vertical height change between the receiver centre lines, not to how far the hitch projects behind the motorhome.
Related Roadmaster tow-bar references
- Roadmaster Falcon 2 Tow Bar 520 / 525 Exploded Parts Diagram
- Roadmaster Nighthawk 676 / 677 Tow Bar Exploded Parts Diagram
Always follow the current Roadmaster towing and adapter instructions and the vehicle manufacturer's towing limitations before travel.
Related 6,000-lb receiver adapters: See our Roadmaster 070, 072 and 076 6,000-lb hi-low adapter comparison for additional models and selection details. Match the original part number and physical dimensions before ordering.
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