Braveboy 970834002 Mower Grass Bag Compatible with Ryobi 40V 21" Brushless Mower RY401140 RY401015 RY401150 RY401014US RY401021 (Frame Not Included)

What It Is

The Braveboy 970834002 is an aftermarket grass collection bag designed for Ryobi 40V 21-inch brushless mowers. It replaces the OEM bag to catch clippings during mulching or bagging operations, letting you collect debris instead of leaving it on the lawn.

Fitment & Compatibility

Before buying, confirm your mower model. This bag fits Ryobi RY401140, RY401015, RY401150, RY401014US, and RY401021—all 40V 21-inch brushless models. Does not include the frame; you need your existing mower’s grass bag frame for attachment. Measure bag dimensions: roughly 21 x 12 x 10 inches. Compare to your current bag—if your mower uses a different attachment system (e.g., older Ryobi 40V models or 20V versions), this won’t work. Check deck size—only 21-inch decks are supported.

Key Things to Buy

• Quality concerns: At 3.9 stars from 23 reviews, expect occasional fit issues. Some users report the bag doesn’t seal tightly, causing clippings to leak around the chute.
• Installation difficulty: Easy—snaps onto your existing frame. No tools needed. Takes under 5 minutes.
• Common gotcha: The bag is slightly smaller than OEM, so it may fill faster and require more frequent emptying. Also, the attachment hooks may be less robust—handle gently to avoid tearing.
• Material: Fabric is thin nylon. Not as durable as OEM; expect wear after a season of heavy use.

Should You Buy It

If you need a budget replacement for a Ryobi 40V 21-inch brushless mower and already have the frame, this bag works for light-duty bagging. But for frequent or heavy use, consider spending more on the OEM part for better fit and durability.