Mighty Mule MM571W
#1 in Single swingFull review
A heavy duty single gate kit for long or heavy farm and estate gates that wants a UL 325 listing. Check the length and weight chart for gates over 8 ft.
Amazon $443.04$443.04
The Mighty Mule MM571W rates 3.6 among single swing automatic gate openers; the Mighty Mule MM572W rates 3.5 among dual swing ones. The Mighty Mule MM571W costs $322.95 less ($443.04 vs $765.99).
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
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 (single swing and dual 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 MM571W | Mighty Mule MM572W |
|---|---|---|
| Overall rating | 3.6/5 | 3.5/5 |
| Gate weight 20% | 87 gates up to 850 lb per leaf | 87 gates up to 850 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 | 100 UL 325 listed |
| Price 25% | 55 $443.04 | 40 $765.99 |
| Warranty 25% | 12 1.5-year warranty | 12 1.5-year warranty |
Specifications
| Mighty Mule MM571W | Mighty Mule MM572W | |
|---|---|---|
| Gate | ||
| Gate type | Single swing | Dual swing |
| Heaviest gate | 850 lb | 850 lb |
| Longest gate | 18 ft | 18 ft |
| Time to open | 14 s | 14 s |
| UL 325 listed | Yes | Yes |
| Power | ||
| Power | Battery, solar ready | Battery, solar ready |
| Battery | 7 Ah | 7 Ah |
| Motor voltage | 12 V | 12 V |
| Build | ||
| Remotes included | 1 | 1 |
| Weight | 30 lb | 55 lb |
| Warranty | 1.5 years | 1.5 years |