Roadmaster Sterling All Terrain 576
#9 in Tow barFull review
For anyone who lifts the bar on and off often. It is light and complete in the box, at a premium price.
etrailer $1,375$1,375
The Roadmaster Sterling All Terrain 576 is the better tow bar overall, rated 3.7 to 3.2. The Roadmaster Sterling All Terrain 576 leads on warranty, features and weight or install. The Blue Ox Alpha BX7390 wins on price. The Blue Ox Alpha BX7390 costs $338.36 less ($1,036.64 vs $1,375).
Blue Ox Alpha BX7390
#16 in Tow barFull review
For a car or small SUV behind a midsize motorhome. It is easy to handle, but rivals offer more capacity and longer warranties for the money.
Amazon $1,036.64$1,036.64
Prices were last checked November 3, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Roadmaster Sterling All Terrain 576 for warranty (limited lifetime warranty vs 3-year warranty), features (self-aligning arms, non-binding latches, stores on the motorhome, safety cables included vs self-aligning arms, non-binding latches, safety cables included) and weight or install (35 lb vs 40 lb).
- Choose the Blue Ox Alpha BX7390 for price ($1,036.64 vs $1,375).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every tow bar tow bar; a clear win is highlighted. How we rank explains each one.
| Factor weight | Roadmaster Sterling All Terrain 576 | Blue Ox Alpha BX7390 |
|---|---|---|
| Overall rating | 3.7/5 | 3.2/5 |
| Price 25% | 15 $1,375 | 44 $1,036.64 |
| Capacity or braking 20% | 43 8,000 lb towing capacity | 50 8,500 lb towing capacity |
| Weight or install 15% | 80 35 lb | 60 40 lb |
| Features 20% | 90 self-aligning arms, non-binding latches, stores on the motorhome, safety cables included | 70 self-aligning arms, non-binding latches, safety cables included |
| Warranty 20% | 100 limited lifetime warranty | 22 3-year warranty |
Specifications
| Roadmaster Sterling All Terrain 576 | Blue Ox Alpha BX7390 | |
|---|---|---|
| Tow bar | ||
| Type | Tow bar | Tow bar |
| Towing capacity | 8,000 lb | 8,500 lb |
| Hitch | 2 in receiver | 2 in receiver |
| Material | Aluminum | Steel |
| Self-aligning arms | Yes | Yes |
| Non-binding latches | Yes | Yes |
| Stores on motorhome | Yes | - |
| Safety cables included | Yes | Yes |
| Lights in arms | No | - |
| Brake included | No | No |
| Build | ||
| Weight | 35 lb | 40 lb |
| Warranty | Limited lifetime | 3 years |