For full time travelers who hook up often, sometimes after dark. The built in lights and wiring are worth the high price if you use them.
etrailer $1,545The Roadmaster Nighthawk 676 and the Roadmaster StowMaster 501 are evenly matched, rated 3.3 and 3.3. The Roadmaster Nighthawk 676 leads on features and capacity or braking. The Roadmaster StowMaster 501 wins on price. The Roadmaster StowMaster 501 costs $585 less ($960 vs $1,545).
For owners who want the bar to stay on the car and already have a crossbar baseplate. Others get more for the money elsewhere.
Amazon $960Prices 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 Nighthawk 676 for features (non-binding latches, stores on the motorhome, safety cables included, lights in the arms vs self-aligning arms) and capacity or braking (8,000 lb towing capacity vs 6,000 lb towing capacity).
- Choose the Roadmaster StowMaster 501 for price ($960 vs $1,545).
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 Nighthawk 676 | Roadmaster StowMaster 501 |
|---|---|---|
| Overall rating | 3.3/5 | 3.3/5 |
| Price 25% | 4 $1,545 | 52 $960 |
| Capacity or braking 20% | 43 8,000 lb towing capacity | 14 6,000 lb towing capacity |
| Weight or install 15% | 50 weight not published (neutral score used) | 68 38 lb |
| Features 20% | 75 non-binding latches, stores on the motorhome, safety cables included, lights in the arms | 25 self-aligning arms |
| Warranty 20% | 100 limited lifetime warranty | 100 limited lifetime warranty |
Specifications
| Roadmaster Nighthawk 676 | Roadmaster StowMaster 501 | |
|---|---|---|
| Tow bar | ||
| Type | Tow bar | Tow bar |
| Towing capacity | 8,000 lb | 6,000 lb |
| Hitch | - | 2 in ball coupler |
| Material | Aluminum and steel | - |
| Self-aligning arms | - | Yes |
| Non-binding latches | Yes | No |
| Stores on motorhome | Yes | No |
| Safety cables included | Yes | No |
| Lights in arms | Yes | No |
| Brake included | No | No |
| Build | ||
| Weight | - | 38 lb |
| Warranty | Limited lifetime | Limited lifetime |
