DK2 OPG777 Stump Grinder
#7 in Walk-behindFull review
For a buyer who wants a known engine and the longest machine warranty in this price range. Depth is average.
Amazon $1,799$1,799
The DK2 OPG777 Stump Grinder and the Bilt Hard 420cc Stump Grinder are evenly matched, rated 3.8 and 3.7. The DK2 OPG777 Stump Grinder leads on warranty and features. The Bilt Hard 420cc Stump Grinder wins on height or wheel and price. The Bilt Hard 420cc Stump Grinder costs $399.01 less ($1,399.99 vs $1,799).
Bilt Hard 420cc Stump Grinder
#8 in Walk-behindFull review
A low-cost 420cc grinder for a homeowner with a handful of stumps. It gives big-engine power without the price of the better-equipped models.
Amazon $1,399.99$1,399.99
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 DK2 OPG777 Stump Grinder for warranty (3-year warranty vs 1-year warranty) and features (tow bar vs none of the three).
- Choose the Bilt Hard 420cc Stump Grinder for height or wheel (24 in above grade vs 12 in above grade) and price ($1,399.99 vs $1,799).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every walk-behind stump grinder; a clear win is highlighted. How we rank explains each one.
| Factor weight | DK2 OPG777 Stump Grinder | Bilt Hard 420cc Stump Grinder |
|---|---|---|
| Overall rating | 3.8/5 | 3.7/5 |
| Price 25% | 68 $1,799 | 84 $1,399.99 |
| Depth 20% | 60 9 in below grade | 66 9.3 in below grade |
| Height or wheel 10% | 50 12 in above grade | 100 24 in above grade |
| Power 10% | 100 429 cc engine | 96 420 cc engine |
| Teeth 10% | 62 9 teeth | 62 9 teeth |
| Features 15% | 35 tow bar | 0 none of the three |
| Warranty 10% | 100 3-year warranty | 33 1-year warranty |
Specifications
| DK2 OPG777 Stump Grinder | Bilt Hard 420cc Stump Grinder | |
|---|---|---|
| Cutting | ||
| Type | Walk-behind | Walk-behind |
| Depth below grade | 9 in | 9.3 in |
| Height above grade | 12 in | 24 in |
| Cutter wheel | 12 in | - |
| Teeth | 9 | 9 |
| Power | ||
| Engine | Kohler Command PRO CH440 | 420cc 4-stroke |
| Displacement | 429 cc | 420 cc |
| Engine power | 14 hp | 15 hp |
| Electric start | No | No |
| Build | ||
| Tow bar | Yes | No |
| Weight | 231 lb | - |
| Warranty | 3 years | 1 year |