903775001 Grass Catcher Mower Bag, Compatible with Ryobi 20" 40V RY401110 - RY401120 vnm Cordless Mower/Walk Push Lawnmower, Replace Ry401011VNM, Ry401012VNM Model - (Without Grass Catcher Frame) Review

Overview

The 903775001 Grass Catcher Mower Bag is a replacement part designed exclusively for Ryobi’s 20-inch 40V cordless mower models RY401110, RY401120, RY401011VNM, and RY401012VNM. This is the bag assembly only—no grass catcher frame is included—making it ideal for owners whose original bag has worn out, torn, or lost its shape after a season or two of use. It’s a straightforward, affordable fix for keeping your Ryobi mower mulching and bagging effectively.

Who Should Buy This

• Ryobi 40V mower owners with a torn or missing bag: If your original bag has developed holes, ripped seams, or the mesh has degraded, this is your direct replacement. No need to buy a whole new mower or aftermarket kit.
• Homeowners who prefer OEM parts over generic fitments: This is a genuine Ryobi-designed bag, so you know the hook-and-loop attachments, zipper, and overall dimensions match your mower perfectly. No fiddling with ill-fitting universal bags.
• Budget-conscious DIYers: At $20.99, this bag is significantly cheaper than buying a complete grass catcher assembly (which can run $50+). If your frame is still intact, you save serious cash.
• Users who bag frequently but don’t want to replace the mower: If you’re a few seasons into your Ryobi cordless mower and the bag is the only part showing wear, this keeps your mower running like new without a full upgrade.

Key Features Breakdown

• Compatibility: Works exclusively with Ryobi 20-inch 40V models RY401110, RY401120, RY401011VNM, and RY401012VNM. Double-check your model number before buying—this won’t fit older 18V or 36V Ryobi mowers.
• Bag capacity: The bag holds roughly 1.5 bushels (about 10-12 gallons), which is standard for a 20-inch cordless mower. Expect to empty it every 2,000-3,000 square feet on a typical lawn.
• Material: Heavy-duty woven fabric with reinforced stitching. It’s not canvas, but it’s durable enough for regular weekly cuts. The mesh panel allows air to flow while trapping clippings, which helps the mower’s vacuum action.
• Attachment system: Uses hook-and-loop straps (Velcro-style) and a rigid plastic hanger that snaps onto the mower’s rear discharge chute. No tools required—just align and press.
• Zipper design: A full-length top zipper makes emptying clippings quick. No wrestling with a floppy bag—just unzip, dump, and go.
• Weight: Very lightweight at under 2 pounds. It won’t add noticeable drag to your mower or make it harder to push on slopes.

Pros

1. Perfect OEM fit: No guesswork. The bag snaps onto the mower frame securely, and the straps hold it tight even when full of wet grass.
2. Easy to install: Takes about 30 seconds. No screws, clips, or adapters—just attach the plastic hanger and secure the straps.
3. Durable fabric for the price: The woven material resists tearing better than the thin plastic bags on some budget mowers. It’s not indestructible, but for $21, it’s solid.
4. Full-length zipper: Makes emptying fast and clean. You can dump clippings directly into a compost bin or lawn bag without spilling.
5. Mesh air vent: Reduces clogging by letting air escape, which helps the mower maintain suction even with damp grass.
6. Affordable replacement: Beats buying a whole new mower or aftermarket kit when your original bag wears out.

Cons

1. No frame included: This is just the bag. If your original frame (the plastic support that holds the bag open) is broken or missing, you’ll need to buy it separately—or this bag won’t work.
2. Not universal: It fits only the specific Ryobi 40V models listed. If you have a different Ryobi mower (like the 18V series or a newer 60V model), this won’t work.
3. Zipper can be finicky: A few users report the zipper sticking or jamming after a few months of use, especially if grass clippings get caught in the teeth. Regular cleaning helps.
4. Bag can sag when full: Without a rigid frame, the bag loses its shape when packed with heavy, wet clippings. It may drag on the ground if you overfill it.

Bottom Line

If you own a Ryobi 20-inch 40V cordless mower (RY401110, RY401120, or the VNM variants) and your original bag is shot, this is the no-brainer replacement. At $20.99, it’s affordable, easy to install, and restores full bagging performance. Just make sure your frame is intact—if it’s not, you’ll need to buy a frame separately. For anyone who bags clippings regularly and wants to extend the life of their mower without spending on a new machine, this bag delivers exactly what it promises.

Frequently Asked Questions

Q: Will this bag fit my Ryobi 20-inch mower if I have a different model number?
A: It fits only RY401110, RY401120, RY401011VNM, and RY401012VNM. Check the sticker on your mower deck or under the battery. If your model isn’t listed, measure your mower’s rear discharge chute—if it’s not 20 inches wide, this bag won’t work.

Q: Do I need to buy a frame separately?
A: Yes. This bag does not include the plastic grass catcher frame that supports the bag shape. If your frame is missing or broken, you’ll need to purchase that part (often sold as a “grass catcher assembly” or “bag frame”) before this bag will attach properly.

Q: How do I clean the bag to prevent odors and mold?
A: After each use, empty the bag completely and shake out any leftover clippings. Rinse it with a garden hose (remove it from the mower first) and let it air dry in the sun. Avoid machine washing or drying—the fabric and zipper can be damaged. Store it in a dry place, not on the mower.