For gas motorhomes towing one car. It brakes in step with the coach and stays out of sight.
Amazon $1,165.57The Demco Stay-IN-Play Duo is the better tow bar overall, rated 4.3 to 3.8. The Demco Stay-IN-Play Duo leads on capacity or braking and price. The Roadmaster InvisiBrake 8700 wins on warranty. The Demco Stay-IN-Play Duo costs $214.43 less ($1,165.57 vs $1,380).
For owners who keep one towed car and want a brake they never handle. Proportional systems brake more smoothly.
Amazon $1,380Prices 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 Demco Stay-IN-Play Duo for capacity or braking (proportional braking vs set braking force, not proportional) and price ($1,165.57 vs $1,380).
- Choose the Roadmaster InvisiBrake 8700 for warranty (limited lifetime warranty vs 5-year warranty).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every brake tow bar; a clear win is highlighted. How we rank explains each one.
| Factor weight | Demco Stay-IN-Play Duo | Roadmaster InvisiBrake 8700 |
|---|---|---|
| Overall rating | 4.3/5 | 3.8/5 |
| Price 25% | 68 $1,165.57 | 46 $1,380 |
| Capacity or braking 20% | 100 proportional braking | 0 set braking force, not proportional |
| Weight or install 15% | 100 stays installed in the car | 100 stays installed in the car |
| Features 20% | 100 breakaway included, motorhome monitor included | 100 breakaway included, motorhome monitor included |
| Warranty 20% | 44 5-year warranty | 100 limited lifetime warranty |
Specifications
| Demco Stay-IN-Play Duo | Roadmaster InvisiBrake 8700 | |
|---|---|---|
| Tow bar | ||
| Type | Supplemental brake | Supplemental brake |
| Braking | ||
| Proportional | Yes | No |
| Install | Installed | Installed |
| Breakaway included | Yes | Yes |
| Motorhome monitor | Yes | Yes |
| Motorhome brakes | Hydraulic brakes | - |
| Build | ||
| Warranty | 5 years | Limited lifetime |
