Lawn Mower Rear Grass Catcher Bag W/Frame Kit for Kobalt 40V KM 2040X-06 2041B-06 Max Lawn Mower

What It Is

This is a complete rear grass catcher bag and frame kit designed specifically for the Kobalt 40V Max lawn mower models KM 2040X-06 and 2041B-06. It collects clippings as you mow, saving you from raking or mulching.

Fitment & Compatibility

Before buying, confirm your mower’s exact model number (look on the underside of the battery compartment or rear of the deck). This kit only fits Kobalt 40V Max mowers with model numbers KM 2040X-06 or 2041B-06—it will not work on other Kobalt 40V mowers or any gas models. The frame attaches to the mower’s rear discharge chute using two mounting pins; check that your mower has the corresponding slots. Deck size is 20 inches, matching these models. This is an aftermarket replacement, not OEM Kobalt, so fitment may be slightly looser than the original bag. Measure the bag opening (roughly 12" x 8") and compare to your mower’s discharge port if you’re unsure.

Key Things to Know

• Installation difficulty: Moderate. You’ll need to attach the frame to the mower with two pins (included) and then snap the bag onto the frame. Allow 15–20 minutes.
• Bag capacity: Holds about 1.5 bushels (approx. 12 gallons). You’ll need to empty it frequently on thick or wet grass to avoid clogging.
• Durability: Some users report the bag material is thinner than OEM, and the frame’s plastic clips may break if over-tightened or dropped. Handle gently.
• Common gotcha: The bag may not seal perfectly against the mower deck, causing some clippings to blow out the sides. Check the foam seal on the mower’s discharge chute—replace it if worn.

Should You Buy It

If you own a Kobalt KM 2040X-06 or 2041B-06 and want a budget-friendly replacement for a lost or broken bag, this kit works—but expect slightly looser fit and lower durability than the original. It’s best for light-duty use on small to medium lawns, where you can empty the bag often and avoid heavy, wet grass.