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Internet # 335680409

Model # RY40ST01K-RYEDG-RYBRC

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40V 15 in Cordless Attachment Capable String Trimmer, Edger and Brush-Cutter Attachments with 4.0 Ah Battery and Charger

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  • More Power Than a 25cc Gas Trimmer
  • Achieve Clean, Precise Edges Along Sidewalks & Driveways
  • Power to Tackle Thick Weeds & Brush
  • View More Details

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Product Details

About This Product

The 40V 15" String Trimmer Kit delivers more power than a 25cc gas string trimmer, making it a true gas replacement without the hassle of gas. With just the pull of a trigger, trim for 1 hour using a 40V 4Ah battery. Save money, time, and space with attachment capability and transform your string trimmer into a variety of tools. This trimmer is compatible with RYOBI EXPAND-IT attachments & other universal attachments to take on any job around the yard. Trim weeds & grass with the adjustable 13" to 15" cut swath. A larger cut swath will give you maximum performance while a smaller cut swath gives you maximum runtime. This trimmer is equipped with a variable speed trigger to achieve maximum control when trimming along fences, mailboxes, and flower beds. Conveniently reload your .080" line in under 60 seconds with the REEL EASY+ SPEED WINDER bump feed head. Easily transform your attachment capable string trimmer with the included Edger and Brish Cutter Attachment - saving money, time, and space. This edger allows you to achieve clean, precise edges along sidewalks & driveways with a rear wheel for consistency and a blade indicator for accuracy. Quickly adjust the depth of your edging up to 2.25". The brush cutter has the power to tackle thick weeds & brush with its 10" Tri-Arc blade. The blade is reversible, so when it's time to replace it, you can flip the blade to the other side to double its life. This brush cutter is also equipped with a steel shaft for added durability.

Highlights

  • String Trimmer: More power than a 25cc gas string trimmer, making it a true gas replacement
  • String Trimmer: Experience gas performance with just the pull of a trigger. No gas, no maintenance, no hassle
  • String Trimmer: 1 hour of runtime using a 40V 4Ah battery; 119 minutes of runtime using 40V 8Ah battery (40V 4Ah battery included)
  • String Trimmer: Attachment capability transforms your string trimmer into a variety of tools; Compatible with RYOBI EXPAND-IT attachments and other universal attachments. Save time, save money, save space.
  • String Trimmer: Adjustable 13" to 15" cut swath for maximum performance or maximum runtime
  • String Trimmer: Maximum control with variable speed trigger
  • String Trimmer: Reload .080" line in under 60 seconds with the REEL EASY+ SPEED WINDER bump feed head
  • String Trimmer: Part of the RYOBI 40V System - Any 40V Battery Works With Any 40V Product
  • Edger Attachment: Achieve clean, precise edges along sidewalks & driveways
  • Edger Attachment: Consistent edging with rear wheel
  • Edger Attachment: Accurate edging with blade indicator
  • Edger Attachment: Quick & easy depth adjustment (0.5" - 2.25")
  • Brush-Cutter Attachment: Power to tackle thick weeds & brush
  • Brush-Cutter Attachment: 10" reversible Tri-Arc blade for extended life
  • Brush-Cutter Attachment: Durable steel shaft
  • Brush-Cutter Attachment: Fits most gas & cordless attachment capable systems
  • 5-year manufacturer's tool warranty, 3-Year Manufacturer's Attachment Warranty
  • Included: RY40PH01 40V Power Head, A54ST01 Straight Shaft Trimmer Attachment, OP40404 40V 4Ah Battery, OP404 40V Charger, Front Handle, Grass Deflector, .080" Replacement Line, RYEDG Edger Attachment, Holding Pin, Hanger Cap, RYBRC Brush Cutter Attachment, J-Handle Assembly, Shoulder Harness Assembly, Gear Head Locking Tool, Hanger Cap, and Operator's Manuals
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Product Information

Internet # 335680409

Model # RY40ST01K-RYEDG-RYBRC

Specifications

Dimensions

Line Style Size

.080

Maximum Cutting Path Diameter (in.)

15 in

Recommended Line Diameter (in.)

.080 in

Shaft Length (in.)

44 in

Details

Battery Amp Hours

4 Ah

Battery Run Time (min.)

60

Battery Type

Lithium Ion

Battery Voltage (V)

40V

Battery/Charger

(1) 4 Ah Battery & Charger Included

Charger Included

Charger Included

Features

Attachment Capable, Rechargeable, Zero Emissions

Head Type

Wind without Assembly

Included

Battery, No-tool Line Replacement, String

Line Advance System

Bump

Number of Total Batteries Included

1

Outdoor Power Combo

Combo

Power Type

Battery

Product Weight (lb.)

8.6 lb

Returnable

30-Day

Shaft Type

Straight Shaft

Start Type

Electric

Tools Included

Battery, Charger, Edger, String Trimmer, Trimmer Line

Trimmer Line Type

String

Trimmer Type

Handheld String Trimmers

Warranty / Certifications

Manufacturer Warranty

5-Year Limited Tool Warranty, 3-Year Limited Battery Warranty

Questions & Answers

Will this work on model# RY40HP01
ByAug 20, 2026
1 Answer | 
Answer This Question

Hello, Edger - This 40V power head may be used with only the following RYOBI EXPAND-IT attachments: RYBRC Brush Cutter, RYHDG Hedge Trimmer, RYGUT Gutter Blower, RY15518, RYEDG11, RYEDG12, and RYEDG Edgers, RYAXA22 Blower, RY15523, RY15523A, RY15526, RY15527, and RYSST44 Straight Shaft String Trimmers, RY15550, RYTIL66, and RYTIL Cultivators, RY15520, RYPRN33, and RYPRN Pruners, RYSNW00 Snow Thrower, RYSWP25, RYSWP, and RYSWPRUB Sweepers. If you need further support, then feel free to ask another question. You can also contact us by phone at 1.800.525.2579, Monday - Friday from 9am to 6pm (EST), or via email when you visit us at https://www.ryobitools.com/support/contact. This question is from RYOBI Expand-It Universal Straight Shaft Edger Attachment (RYEDG).

By|Aug 21, 2026


    I can't get the washer off in order to change the blade. The nut is off but it seems the washer is immovable.
    ByAug 20, 2026
    0 Answer | 
    Answer This Question

    Does the blade come with the Expand-It Brush-Cutter Trimmer Attachment
    ByAug 20, 2026
    1 Answer | 
    Answer This Question

    Hello, Curious - Yes. The Expand-It Brush-Cutter Attachment (RYBRC) is supplied with a cutting blade. If you need further support, then feel free to ask another question. You can also contact us by phone at 1.800.525.2579, Monday - Friday from 9am to 6pm (EST), or via email when you visit us at https://www.ryobitools.com/support/contact. This question is from RYOBI Expand-It Brush-Cutter Trimmer Attachment (RYBRC).

    By|Aug 21, 2026


      This is my second ryobi 40v weed eater power head. Same problem with both. They smoke. Please advise. I have interchangeable accessories for this tool.
      ByAug 18, 2026
      1 Answer | 
      Answer This Question

      Hello, Yvonne - Thank you for the question. If you would, please contact us by phone at 1.800.525.2579, Monday - Friday from 9am to 6pm (EST), or via email when you visit us at https://www.ryobitools.com/support/contact. This question is from RYOBI 40V 15 in. Expand-It Cordless Battery Attachment Capable String Trimmer with 4.0 Ah Battery and Charger (RY40ST01K).

      By|Aug 20, 2026


        Does this work with 40 volt cordless weed eater?
        ByAug 16, 2026
        1 Answer | 
        Answer This Question

        Hello, Mike - Yes. The RYBRC brush cutter attachment is compatible with Ryobi 40V battery‑operated power heads and connects to the power head via a coupler. We recommend confirming your unit is a Ryobi 40V power head with the standard coupler before attaching. If you need further support, then feel free to ask another question. You can also contact us by phone at 1.800.525.2579, Monday - Friday from 9am to 6pm (EST), or via email when you visit us at https://www.ryobitools.com/support/contact. This question is from RYOBI Expand-It Brush-Cutter Trimmer Attachment (RYBRC).

        By|Aug 18, 2026


          Will it fit RY40PHO1?
          ByAug 16, 2026
          1 Answer | 
          Answer This Question

          Hello, Mark - Yes. The RYBRC brush cutter attachment is compatible with the RY40PH01 40V power head. If you need further support, then feel free to ask another question. You can also contact us by phone at 1.800.525.2579, Monday - Friday from 9am to 6pm (EST), or via email when you visit us at https://www.ryobitools.com/support/contact. This question is from RYOBI Expand-It Brush-Cutter Trimmer Attachment (RYBRC).

          By|Aug 19, 2026


            is the shaft adjustable for short people
            ByAug 14, 2026
            1 Answer | 
            Answer This Question

            Hello, Ryobi - This trimmer features a front handle that can be adjusted for comfort and balance. The shaft itself can not be adjusted to make it shorter. If you need further support, then feel free to ask another question. You can also contact us by phone at 1.800.525.2579, Monday - Friday from 9am to 6pm (EST), or via email when you visit us at https://www.ryobitools.com/support/contact. This question is from RYOBI 40V 15 in. Expand-It Cordless Battery Attachment Capable String Trimmer & Brush-Cutter with 4.0 Ah Battery and Charger (RY40ST01K-RYBRC).

            By|Aug 18, 2026


              Is this compatible with RY253SS?
              ByAug 14, 2026
              1 Answer | 
              Answer This Question

              Hello, Lisa - Yes, this is compatible! If you need further support, then feel free to ask another question. You can also contact us by phone at 1.800.525.2579, Monday - Friday from 9am to 6pm (EST), or via email when you visit us at https://www.ryobitools.com/support/contact. This question is from RYOBI Expand-It Brush-Cutter Trimmer Attachment (RYBRC).

              By|Aug 17, 2026


                Viewing 1-8 of 727

                Customer Reviews

                4.2 out of 5

                • 4.2 out of 5,004 reviews
                • 37% recommend this product
                Filter by:
                Showing 1-10 of 5,004 reviews
                Excellent String Trimmer for Everyday Yard Maintenance
                I've been very happy with this string trimmer for maintaining my yard. Although it's compatible with the Expand-It attachment system, I've only used it as a string trimmer since purchasing it, and it has handled that job extremely well. I primarily use it to trim around landscaping, fences, trees, and other areas that my mower can't easily reach. It has plenty of power for keeping the edges of my yard looking clean, and the 40V battery provides more than enough runtime to finish my typical trimming without needing to recharge. Replacing the trimmer line has also been straightforward. It's a maintenance task every string trimmer owner eventually has to deal with, and I found the process to be simple and easy to learn. One of the things I appreciate most is not having to deal with gas, oil, or pull-starting an engine. I can install the battery, pull the trigger, and get right to work. It's been reliable every time I've used it, and I haven't had any issues with performance. Even though I haven't taken advantage of the Expand-It attachments, it's nice knowing I have the option to add them in the future without buying another powerhead. As a string trimmer, though, it has exceeded my expectations and has become a regular part of my lawn care routine.
                by
                  3 found this review helpful
                  Avoid for your life
                  Absolute trash product. I had Ryobi weed eater before and it was not that bad, not good not bad. So when it went to pasture I got another one. 3-months in now, the head broke off while in use, with no offers of a replacement part. The bump feed is a joke and might be the worst “innovation” I’ve ever seen. Stupid plastic snaps so easy how. Avoid. UPDATE: paid $30 to send back to Ryobi Tool Center, got it back used it one time and broke in identical spot. Avoid at all costs. Trash product.
                  by
                  Response from RYOBIJul 10, 2026
                  Hello, Bobby joe butters - We are disappointed that your trimmer head is broken. Would you please reach out to us via our Contact Us page at https://www.ryobitools.com/support/contact? RYOBIOutdoorTools
                    6 found this review helpful
                    Blade Guard Fail
                    **,Buyer beware!*** I purchased this online at Home Depot. The new design of the blade guard gets caught on the turf during use. You will end up with a jagged edge. Ryobi will tell you that they do not have a remedy or raise the guide wheel at the highest setting. Writing to Ryobi to complain was a waste of time. Customers are being used as Ryobi R&D. You won't get a solution but they will use the photos you send them to improve the future version of this product. Seriously?!!! I rated this product, a major fail.
                    by
                    Response from RYOBIJul 28, 2026
                    Hello, Doubtingrd - We are sorry to hear that your experience with this edger has not been a positive one. When edging through dense turf, making several shallow passes and gradually increasing the depth often results in smoother operation and improved cutting performance. We hope this helps! If you need any assistance in the future, feel free to reach out to us at https://www.ryobitools.com/support/contact. RYOBIOutdoorTools
                      This customer chose to rate the product and not provide text.
                      by
                      Don’t recommend
                      This string trimmer had a defective tap/bump mechanism and I couldn’t use after 30 min on the first use. String would not release properly. The housing was so tight I had to take it back to Home Depot to open it up. It took 3 men working that day to get it open. Once opened, it would not go back together and I left with it in pieces. They would not return it and referred me to the on site Ryobi Rep who helped me register the product on their site for a replacement. In the process of opening the housing the shaft was easily bent. After not hearing back from Ryobi in a week, and texting the Ryobi rep who gave me her number with no response, I called Ryobi directly, and the registration process had not gone through. That customer service rep was very helpful and has re-ordered a new complete trimmer attachment. And an updated/improved bump mechanism due to so many issues. We’ll see how the next one works. Overall, I would not recommend this particular trimmer due to the quality of steel tubing bending/crimping easily, housing being too tight to open by one person, faulty bump mechanism and Home Depot, not returning at the store, but making me go through Ryobi directly.
                      by
                      Response from RYOBIJul 27, 2026
                      Hello, Viceroycape - We are sorry that you had a difficult experience. If you need assistance with your replacement trimmer, pleasereach out to us via our Contact Us page at https://www.ryobitools.com/support/contact. RYOBIOutdoorTools
                        2 found this review helpful
                        This is my second expandit device. The first one was from 2018 and still works fine but I have more to trim and I figured the newer one would have a lot more power, and I was right. Should have bought this earlier. I currently have the trimmer head, brush cutter, and edger. All work very well. Also saves a lot over buying individual tools and they are easy to swap. All my power tools are Ryobi as the batteries interchange. I recommend this for any user.
                        by
                        1 found this review helpful
                        It was just what I needed to make the sidewalk and driveway look completely done. It was super easy to take off my weed wacker and add this edger. I ordered it online it was delivered sitting on my front porch when I got home no damage to the box.
                        by
                        The combination string trimmer and brush cutter are game changers with our one acre property. BlackBerry's have now met their match.
                        by
                        • Verified Purchase
                        Poor design and execution
                        This is a horribly designed product. I am a big fan of Ryobi products. I have a fair number of their tools and almost without exception, I find them to be of great quality. This product - the 40V string trimmer - is the rare exception. Unlocking the head unit to gain access to the string is nearly impossible. It is incredibly hard to turn the plastic ring in the first instance. You have to use a screwdriver to pry the unit open from the locked position and you run the risk of damaging the plastic ring. Trying to remove the bump head altogether is even worse and damaging the plastic is highly likely. I have reached out Ryobi for assistance. I have watched countless YouTube videos in an effort to find out if I am doing something wrong and the best way to accomplish these goals. Quite frankly, it should not be this hard to accomplish these goals. When I first purchased this item, I thought that there was a defect so I brought it back to Home Depot and exchanged it for an identical replacement. The replacement has been even more difficult than the first one. I am giving up on this Ryobi product. I will head to Home Depot or some other retailer and see if there is another brand that is easier to use. I hate to have to get into a different battery eco-system, but to avoid the frustration and unnecessary challenges, it will be worth the inconvenience of a different system. Now, I just have to return this unit and get my money back.
                        by
                        Response from RYOBIJul 15, 2026
                        Hello, Frustrated ryobi user - We're sorry to hear that your experience with this trimmer has not been satisfactory! Please feel free to contact us directly at Reviews@RYOBItools.com so we can get this matter resolved for you as soon as possible. RYOBIOutdoorTools
                          10 found this review helpful
                          Cracked part, no help from Ryobi
                          The casing of my trimmer head cracked within a year of use and now Ryobi is refusing to replace it and giving me the runaround, trying to make me drive hours away to a "service center." Why can't companies just make good products and not screw over customers anymore? Really disappointed.
                          by
                          Response from RYOBIJul 10, 2026
                          Hello, Bob36 - We're sorry that you're having a difficult experience. Please feel free to contact us directly at Reviews@RYOBItools.com so we can get this matter resolved for you as soon as possible. RYOBIOutdoorTools
                            7 found this review helpful
                            Showing 1-10 of 5,004 reviews

                            40V 15 in Cordless Attachment Capable String Trimmer, Edger and Brush-Cutter Attachments with 4.0 Ah Battery and Charger

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                            Product Snapshot

                            Ideal for homeowners wanting gas power without hassle, offering versatile attachments and long runtime.
                            Ideal for customers who want gas-like power, ensuring versatile trimming and hedging.
                            Ideal for homeowners who want gas-like power, ensuring hassle-free trimming and versatility.
                            Ideal for homeowners needing a versatile 20V MAX trimmer and blower combo for efficient yard care.

                            Battery Voltage

                            40V
                            40V
                            40V
                            20V

                            Cutting Width

                            13 in. to 15 in.
                            13 in. to 15 in.
                            13 in. to 15 in.
                            14 in.

                            Battery Runtime

                            60 minutes with 4Ah battery
                            Up to 60 minutes
                            60 min.
                            60 min.

                            Telescoping Shaft

                            Automatic Line Feeding