Photo: Product Image

40V Brushless 21" Self-Propelled Mower Kit

Model: #RY40LM10-Y

  • Features 21 Inch Durable Steel Deck
  • Rear-Wheel Drive for Increased Traction
  • SMART TREK Self-Propelled Technology Adapts to Walking Speed
  • Discontinued

Visit interactive landing page to learn more about this mower. Powerful, intuitive and intelligent – this is the future of mowing. With the performance of a high-end gas mower and all the benefits of cordless, there is no need to compromise. Powered by an intelligent Series IV Brushless Motor and a 6Ah lithium-ion high-capacity battery, this mower delivers GAS-LIKE POWER™ and cuts up to a half acre on a single charge. The SMART TREK™ Self-Propelled Technology makes mowing even easier while automatically adjusting to you walking speed. Best of all, it's simple to start. No more gas, oil or pull cords. This completely redesigned mower delivers everything you need with a simple push of the button.


Ryobi five year warranty

This product is covered by a 5-year warranty.

Ryobi three year warranty logo

All RYOBI batteries are covered by a 3-year warranty.

Current RYOBI Promotions

View our current promotions for new product releases and the latest RYOBI savings!

Ryobi Help+

Your one stop destination for tips & techniques, manuals, troubleshooting, FAQs and more!




5 Year Tool Warranty 3 Year Battery Warranty


Recommended Yard Size
1/4 - 1/2 Acre
Mowing Function
Mulching and Bagging Capable
Deck Height Adjustments
7 Positions
40V 4.0 Ah


79.2 lbs.
Deck Size
Cutting Height
1.5" - 4"