Mighty Mule MM572W
#2 in Dual swingFull review
A heavy duty UL 325 listed kit for a wide pair of estate or farm gates. Check the length and weight chart for leaves over 8 ft.
Amazon $765.99$765.99
The Mighty Mule MM572W rates 3.5 among dual swing automatic gate openers; the TOPENS A8131 rates 3.2 among single swing ones. The TOPENS A8131 costs $406.99 less ($359 vs $765.99).
TOPENS A8131
#4 in Single swingFull review
A low cost opener for a heavy single gate near an outlet. Pick a UL 325 listed kit instead where the gate faces a public road or children.
Amazon $359$359
Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Scores side by side
These two sit in different gate type classes (dual swing and single swing), and each is scored against the reference points for its own class, so a rating says how well each does among its own gate type peers. How we rank explains each factor.
| Factor weight | Mighty Mule MM572W | TOPENS A8131 |
|---|---|---|
| Overall rating | 3.5/5 | 3.2/5 |
| Gate weight 20% | 87 gates up to 850 lb per leaf | 89 gates up to 880 lb per leaf |
| Gate length 15% | 80 gates up to 18 ft per leaf | 80 gates up to 18 ft per leaf |
| Safety listing 15% | 100 UL 325 listed | 0 no UL 325 listing published, scored as none |
| Price 25% | 40 $765.99 | 72 $359 |
| Warranty 25% | 12 1.5-year warranty | 0 1-year warranty |
Specifications
| Mighty Mule MM572W | TOPENS A8131 | |
|---|---|---|
| Gate | ||
| Gate type | Dual swing | Single swing |
| Heaviest gate | 850 lb | 880 lb |
| Longest gate | 18 ft | 18 ft |
| Time to open | 14 s | 15 s |
| UL 325 listed | Yes | - |
| Power | ||
| Power | Battery, solar ready | Battery, solar ready |
| Battery | 7 Ah | - |
| Motor voltage | 12 V | 24 V |
| Build | ||
| Remotes included | 1 | 2 |
| Weight | 55 lb | 24.5 lb |
| Warranty | 1.5 years | 1 year |