RYOBI 40V HP Brushless 16" Carbon Fiber Shaft String Trimmer — 16" Cut, 40V 4Ah Runtime, EXPAND-IT Ready

RYOBI’s 16-inch Carbon Fiber Shaft String Trimmer pairs a 40V HP brushless motor with a lightweight carbon fiber shaft to deliver gas-level cutting performance and over 45 minutes of runtime on a 40V 4Ah battery.

This cordless string trimmer is built as a genuine gas alternative: 40V HP Technology combines a high-efficiency brushless motor, advanced electronics, and high-performance lithium battery compatibility to boost power, runtime, and durability without the fuss of fuel. The REEL EASY+ 3-in-1 bump-feed head and tool-free integrated sliding guard let you change the cut swath and reload line quickly, while the EXPAND-IT attachment capability transforms the trimmer into a multi-tool to handle other yard tasks using RYOBI-compatible attachments.

How does this trimmer compare to a 27cc gas model?

It’s engineered to match or exceed the cutting power of many 27cc gas trimmers while eliminating fuel, spark plugs, and oil maintenance. The brushless motor, optimized electronics, and lithium battery deliver strong torque and consistent performance throughout a run.

• 40V HP powertrain tuned for gas-equivalent cutting force
• Brushless motor for higher efficiency and longer motor life
• Over 45 minutes runtime with a 40V 4Ah battery for extended jobs

What adjustments and line features make trimming easier?

The tool includes a REEL EASY+ 3-in-1 bump-feed head that accepts .095-inch line and reloads in under a minute. A sliding guard lets you switch the cutting width between 14 and 16 inches without tools, so you can prioritize runtime or wider coverage as needed.

• Fast line reload design for minimal downtime
• Tool-free integrated sliding guard adjusts 14"–16" cut swath
• Compatible with standard .095" trimmer line

Can I use attachments and other batteries with this trimmer?

Yes — the shaft accepts RYOBI EXPAND-IT attachments, turning the trimmer into a multi-use landscaping tool and saving garage space and money. Also, the trimmer is part of the RYOBI 40V system, so any 40V battery in that platform will power the tool.

• EXPAND-IT attachment-ready for hedge trimmers, edgers, and more
• Interchangeable with all RYOBI 40V batteries for cross-tool convenience
• Attachment capability reduces the need for multiple single-use tools

What ergonomics and controls improve user comfort and control?

The carbon fiber shaft reduces overall weight while retaining stiffness for precise cutting. Variable speed trigger plus a 2-speed switch allow quick adjustments for delicate edging or heavy weed cutting, and the overall balance improves handling over long jobs.

• Lightweight carbon fiber shaft for easier maneuvering
• Variable-speed trigger with 2-speed selector for control vs. power
• Balanced design lowers fatigue during extended use

Who is this for? Landscapers, homeowners with medium-to-large yards, and anyone looking to replace a gas trimmer with cordless power will benefit. It’s particularly well suited for users who value reduced maintenance, attachment versatility, and a lighter shaft for easier handling. Backed by RYOBI’s 5-Year Manufacturer’s Tool Warranty, it’s a practical choice for people who want gas-level cutting performance without gas maintenance or noise.