Updated September 16, 2026. Disclosure: As an Amazon Associate, we earn from qualifying purchases.
Quick answer: The RYOBI RY402110 is the heavy-duty choice in this group. It combines a 15- to 17-inch adjustable swath, brushless motor, carbon-fiber shaft, 6Ah battery, and a three-in-one head that accepts bump-feed line, fixed line, or blades. That capability comes with more size and cost than most suburban yards require.
Our verdict: Best for large properties, thick grass, and buyers who want a powerful fixed-shaft trimmer. It is less appealing for delicate edging, tight beds, or quick weekly touchups where a lighter tool is easier to control.
Check the RYOBI RY402110 at RYOBI →
Research note: This is a research-based review. We have not personally tested this string trimmer. We reviewed current manufacturer specifications, the owner manual where available, warranty terms, kit contents, battery compatibility, and current owner-feedback patterns.
Compare this model with the other picks in our best cordless string trimmers guide, or browse the electric string trimmer hub.
RYOBI RY402110 specifications
| Battery platform | RYOBI 40V |
|---|---|
| Cutting path | Adjustable 15 to 17 inches |
| Head | REEL EASY+ three-in-one: bump-feed, fixed-line, and bladed configurations |
| Maximum listed line | 0.105 inch with supplied heavy-duty setup |
| Motor | 40V HP brushless, direct drive |
| Control | Variable trigger and two-speed switch |
| Shaft | Carbon fiber, fixed shaft |
| Included kit | 6Ah battery, rapid charger, head accessories |
| Manufacturer runtime | Up to 67 minutes with included 6Ah battery |
| Noise claim | Engineered to be 72% quieter than gas |
| Warranty | 5-year tool and 3-year battery |
Best for
- Large lots and long trimming routes.
- Dense grass and tougher weeds that benefit from a wider head and heavy line.
- Current RYOBI 40V owners.
- Users who want line and bladed-head options in one kit.
Consider another model if
- Small lawns and short weekly touchups.
- Buyers who want a light, compact trimmer.
- Anyone who needs a split shaft for edger or pole-saw attachments.
- Users who want automatic line feed.
Wide swath and heavy cutting options
The cutting diameter adjusts from 15 inches for more runtime to 17 inches for faster coverage. The REEL EASY+ head supports bump feed, a fixed-line setup, and a bladed head for heavy weeds and thick grass. RYOBI says the bump head can be reloaded with 0.105-inch line in under a minute. Use only head and line combinations approved in the manual, keep the guard installed, and do not treat plastic blades as a substitute for a metal brush cutter.
Power control
The variable trigger and two-speed switch provide a useful range between careful trimming and maximum output. RYOBI markets the HP brushless system as exceeding the power of a 30cc gas trimmer. That is a manufacturer comparison rather than an independent measurement, but the large swath, heavy line, and 6Ah battery clearly position this above light-duty 18V and 20V units.
Runtime and battery platform
RYOBI states up to 67 minutes with the included 6Ah 40V battery. Cutting at 17 inches, using high speed, or working through dense vegetation will reduce runtime. The battery works across RYOBI’s current 40V outdoor range. It does not fit the company’s 18V ONE+ tools, so buyers should distinguish the two green RYOBI platforms.
Fixed shaft versus attachment capable
This model uses a fixed carbon-fiber shaft. That helps create a direct, purpose-built trimmer, but the shaft does not separate for power-head attachments. RYOBI sells separate attachment-capable 40V models. Choose the RY402110 for focused string-trimming performance; choose an attachment model if you want one motor for edging, cultivating, pruning, or brush cutting.
Pros and cons
Pros
- Adjustable 15- to 17-inch swath
- Heavy-duty line and three head configurations
- Brushless motor
- Large 6Ah battery and claimed long runtime
- Carbon-fiber shaft
- Five-year tool warranty
Cons
- More tool than many small yards need
- Large battery adds weight
- Fixed shaft is not attachment capable
- Bump feed requires ground contact
- Higher kit price than light-duty options
Final recommendation
Best for large properties, thick grass, and buyers who want a powerful fixed-shaft trimmer. It is less appealing for delicate edging, tight beds, or quick weekly touchups where a lighter tool is easier to control.
Frequently asked questions
Is the RY402110 attachment capable?
No. This is a fixed-shaft string trimmer. RYOBI offers separate 40V attachment-capable models.
What cutting width does it have?
The swath adjusts between 15 and 17 inches. The narrower setting favors runtime; the wider setting favors coverage.
What comes with the kit?
RYOBI lists the trimmer, a 40V 6Ah battery, rapid charger, trimmer-head accessories, and manuals.
Can RYOBI 18V batteries power it?
No. It uses the RYOBI 40V platform, which is separate from 18V ONE+.
How long does it run?
RYOBI advertises up to 67 minutes with the included 6Ah battery. Actual runtime varies with cutting width, speed, vegetation, and conditions.
Sources and review method
Specifications and package details can change. Match the exact model number and included-items list before ordering. Manufacturer runtime and noise figures are conditional claims, not guarantees.
Read our affiliate disclosure and learn more about our research process.