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Internet #314600354

Model #RY40290VNM

Store SKU #1005822422

40V HP Brushless 15 in. Cordless Carbon Fiber Shaft Attachment Capable String Trimmer with 4.0 Ah Battery and Charger

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  • Includes High Performance Brushless Motor for Increased Power
  • Lightweight Carbon Fiber Shaft Provides Increased Durability
  • Works with all RYOBI 40V Batteries
  • View More Details
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Product Overview

The RYOBI 40V HP Carbon Fiber Attachment Capable String Trimmer gives you the cordless convenience you want with the GAS-LIKE POWER you need. A carbon fiber shaft provides added durability. The EXPAND-IT attachment capability allows you to transform your trimmer into an edger, blower, pole saw and many more tools with the available attachments, meaning you can save time, space, and money. The premium HP Brushless Motor provides more power, longer runtime, and a longer motor life. This unit is equipped with the REEL EASY+ 3-in-1 Bump Feed Head with SPEED WINDER, which can be reloaded in 60-seconds or less. This REEL EASY+ head can function as a bump feed head, bladed head or fixed line head. The variable speed trigger and 2-speed switch deliver increased control for any application. The adjustable 13 in. to 15 in. cutting width allows you to optimize your trimmer for increased runtime or increased productivity. This lightweight and well-balanced design also has an adjustable front handle for user comfort. The included 40V rapid charger, charges your RYOBI 40V batteries 4X faster than the standard charger. The RYOBI 40V HP String Trimmer, batteries, and rapid charger are all compatible with 50+ RYOBI 40V products. This tool is backed by a 5-Year Tool Warranty.
  • Added durability with a carbon fiber shaft
  • Attachment capable: works with RYOBI EXPAND-IT attachments
  • Brushless motor for maximum power and durability
  • Reel Easy+ 3-in-1 bump feed head
  • Bump feed head for easy reloads in under 60-seconds, includes speed winder, compatible with 0.080 in. or 0.095 in. cutting line
  • Bladed head with heavy-duty serrated blades, ideal for heavy weeds and thick grass
  • Fixed line head, designed for fast and simple reloads, no winding or bumping required, line pivots for increased durability and long-life
  • Premium dual 0.095 in. line
  • Variable speed with 2-speed trigger for more control
  • Adjustable 13 in. to 15 in. cut swath
  • Adjustable front handle for user comfort
  • Includes RYOBI 40V 4.0 Ah lithium battery
  • Includes a rapid charger for 4X faster charging
  • Works with all RYOBI 40V lithium batteries
  • 5-year tool warranty, 3-year battery warranty
  • Click here for more information on Electronic Recycling Programs
  • California residents

Info & Guides

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Voltage (v)40v40v
FeaturesAutomatic Line-Advance System,Straight ShaftAttachment Capable,Brushless,Edger Conversion Capable,Precut Lines,Rechargeable,Straight Shaft,Zero Emissions
Line Advance SystemAutomaticBump
Trimmer Line TypeStringString
Shaft TypeStraightStraight
Start TypeElectricElectric
Power TypeCordlessCordlessCordless ElectricCordless Electric
Battery TypeLithium IonLithium Ion
View ProductView ProductView ProductView Product



Assembled Depth (in.)
35.31 in
Assembled Height (in.)
6.65 in
Assembled Width (in.)
7.87 in
Line Style Size
Maximum cutting path diameter (in.)
Recommended Line Diameter (in.)
Shaft Length (in.)


Assembly Required
Battery Amp Hours
4 Ah
Battery Type
Lithium Ion
(1) 4 Ah Battery & Charger Included
Charger Included
Charger Included
Attachment Capable,Brushless,Edger Conversion Capable,Precut Lines,Rechargeable,Straight Shaft,Zero Emissions
Head Type
Wind without Assembly
Battery,Blade,Multiple Heads,No-tool Line Replacement,String
Line Advance System
Number of Total Batteries Included
Number of Trim Lines
Power Type
Product Weight (lb.)
Shaft Type
Start Type
Tools Included
Battery,Charger,No Additional Tool,String Trimmer
Trimmer Line Type
Trimmer Type
Hand Held
Voltage (v)

Warranty / Certifications

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

Questions & Answers

Typical questions asked about products:

  • Is the product durable?
  • Is the product easy to use?
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Customer Reviews

  • 4.7
    out of 468 reviews
  • 93% recommend this product
Filter by:
Showing 1-10 of 468 reviews
STRONG enough to MOW your yard!!! Great Battery life and charges quick.
This was purchased to trim around the house, and clean up the ditches in the front. It accomplished that and so much more! My tractor died, and was forced to mow my large yard, out of necessity. I recommend ONLY this model or a better one in the series. This is robust, comes with brush-less motor, carbon fiber shaft, and durable construction! I recommend NOT using the faster speed, because all it does for the most part, is drain the battery faster. The SLOW speed is sufficient enough! I am waiting to afford other accessories now. BEST purchase this year.
by Darryl Burgess
  • Verified Purchase
  • Recommended Product
1 person found this helpful
very powerful and long lasting battery
I bought this to replace a temperamental 2 stroke gas trimmer and man what an improvement! I have a 2 acre property with many trees as well as brush surrounding the perimeter. I am able to trim around all my trees etc. on one charge. The brush cutter head is also very impressive I cut through some thick brush and it just wouldn't quit. Over an hour of usage no problem. This has way more power and works so much nicer than any gas trimmer I have used. No vibrations like the gas models, and way quieter. It is about the same weight as a gas trimmer but that's due to the 40v battery which is well worth the trade off for the 1 hour run time. Highly recommended
by Ryan36
    • Recommended Product
    Good Bye Gas
    [This review was collected as part of a promotion.] I bought the 18v and if you live in the city great choice. The new 40v takes the place of the gas power weedears. This weed eater is light weight even with the 40v. Would like to see it with just a little less weight Plus.. This weed eater can be used around flower beds own low speed then back to high speed to cut just about anything. You can use string or the orange cutters in thick or tall grass. The string feed works great so far and easy to reload replacement string. Is there a way the shaft can be adjustable for shorter people. If it could slide in and out 4 to 6 inches for better control. The wife enjoys taking care of the yard work.
    by Mbaca
      • Recommended Product
      I wouldn’t buy it again
      The carbonfiber pole melted at the joint after 25 min of use
      by jaysee
      Response from RYOBIOutdoorsJun 28, 2021
      Hello, Jaysee - We are sorry to read about your experience with the string trimmer! And we'd like to discuss this further, so we can work on improving your experience. If you would, will you please be looking for an email from us at reviews@ryobitools.com? RYOBIOutdoorTools
        • Recommended Product
        9 people found this helpful
        This thing rocks!
        I finally broke down and bought a battery powered trimmer. I was hemming and hawing over it for a while now. Now I'm kicking myself for not doing it sooner. This thing rocks! And it's compatible with the attachments from my 20+ year old gas powered Poulan Pro that it replaced! I'm now contemplating getting the matching mower when my (also) 20+ year old gas mower s###s the bed.
        by Jay
          • Recommended Product
          3 people found this helpful
          Replaced my 35 year old Royobi with this model
          After reading reviews and talking with the Royobi representative at our local store yesterday I chose this model. I’m with dealing with mixed gas eapecially ethinol which really ruins any small engine. My old head unit finally died and i wanted to still use my Royobi attachments. This tool accepts all of them. I am convinced that the new battery systems are relible. It took less than 40 minutes to charge the new battery. The new trimmer is lighter and easier to handle. Since it was too hot to work today, I spent 20 minutes clearing some heavy brush and blackberry bushes only using the standard head. OMG! What a beast. Quiet, powerful and amazingly easy to handle. I wiped out two rough sections in minutes and still have half charge. Ill be going back with the heavy blade and cultivator later. All my older attachments fit and work well. I have the original string trimmer, hedger, brush blade and cultivator. The best way to use the cultivator is to work backwards rather than pushing forward. This new power head can do the job. The other positives for me is not needing ear protection and not annoying neighbors.
          by BobOB
            • Recommended Product
            Lightweight beast
            [This review was collected as part of a promotion.] Bought this a month ago and I’ve gotta say, this is a light weight trimmer. Love the carbon fiber shaft!
            by Rays47
              • Recommended Product
              Great buy
              Did the job cut front yard and back yard and more. Very quiet weedeater. Cut through tall weeds with ease using the blade attachment. Also came with .80 line. Did whole yard off of one full charge battery. My only complaint kind of heavy with 40v battery on it. Beside that i like my purchase.
              by 05312021
                • Recommended Product
                Awesome Build Quality
                [This review was collected as part of a promotion.] I am thoroughly pleased with the build quality and ease of use. I read the manuals just to see if there was more to learn on how to use, but it’s all very straight forward. Assembly was a breeze, virtually nothing to do. This is very rugged, built to last!
                by Morri88
                  • Recommended Product
                  Not gas-like power. I am coming out of a 20-year old Craftsman gas string trimmer with an edger a...
                  Not gas-like power. I am coming out of a 20-year old Craftsman gas string trimmer with an edger attachment. I was never able to stall the gas trimmer while edging. This thing stalls more often than I'd like it to. I used it to edge (with the edger attachment) around flowerbeds prior to putting mulch down. Every 20 ft or so the edger will be clogged with tightly packed dirt and the motor can't turn. Never had that issue with the 26cc gas unit. The Ryobi cordless trimmer is smoother than the gas counterpart thanks to the electric motor, but not lighter. The powerhead weighs as much as a gas unit with the battery installed. We have a 100ft burning bush hedge that gets tiring to trim with a gas timer (with a hedge trimming attachment) holding above my head. It doesn't look like this is going to be any easier. Furthermore, it isn't very quiet either. While not as loud as a gas unit, with he trim dead attached it is much louder than the Ryobi 40V mower. Unlike the gas units, you don't have to mix gas and oil and deal with the starting issues, clogged carburetors, spark plugs, engine heat, and exhaust fumes. I bought this with a 40V mower and they can share batteries. The battery that cam with it is not adequate to do the trimming, edging and the blowing required for my yard. The 6Ah replacement batteries at Home Depot are slightly smaller and about the same weight as the 4Ah battery that came with this unit. I opted to get an additional 6Ah battery because they weigh the same and can be used in the mower also. But it costs about 80% of the price of this trimmer package. For a small yard this will work fine with the included battery, but you'd probably have to buy extra batteries. Factor at least extra 60% into the price to account for the spare battery. At that point it is hard to match the cost of a gas trimmer unless you have other yard equipment that can share the batteries.
                  by HasMan
                    • Recommended Product
                    11 people found this helpful
                    Showing 1-10 of 468 reviews