Lawnmower Grass Bag for Ryobi RY40108 & RY40109 20" 40 Volt Cordless Lawnmower Part#970698001 (Without Grass Catcher Frame)

What It Is

This is a replacement grass bag (part #970698001) for Ryobi 20-inch 40V cordless mowers, specifically models RY40108 and RY40109. It catches clippings during mowing and is sold without the grass catcher frame (frame sold separately if yours is missing or broken).

Fitment & Compatibility

• Deck size: 20 inches – only fits Ryobi 20" 40V mowers with that deck width.
• Models confirmed: RY40108, RY40109. Does not fit Ryobi 18V or gas mowers, or other 40V models with different bag attachment systems.
• OEM vs aftermarket: This is an OEM Ryobi part (not a generic replacement), so fit and durability match original.
• What to check before buying:
  • Verify your mower model number on the underside deck sticker or owner’s manual.
  • Confirm you have the grass catcher frame (part #970698002) – this bag attaches to the frame. If your frame is broken or missing, you’ll need to buy it separately.
  • Measure bag opening vs. frame hook points if unsure – standard fit for these two models.

Key Things to Know

• Installation difficulty: Easy – snaps onto the existing frame. No tools required. Takes under a minute.
• Quality: Heavy-duty fabric with reinforced stitching. Holds up well to regular use, but avoid overfilling (can strain seams).
• Common gotcha: This bag is designed for the frame – if you lost the frame, the bag alone won’t attach securely. Order frame separately if needed.
• Capacity: Fits standard 40V mower clippings volume. May fill quickly on tall/wet grass – empty frequently to maintain suction.

Should You Buy It

Buy this if your original Ryobi RY40108 or RY40109 bag is torn, worn out, or missing and you still have the grass catcher frame. At $24.99, it’s a direct OEM replacement that avoids fitment headaches. Skip it if your frame is also damaged – you’ll need both parts, or consider a full bag+frame kit.