964-04117A 664-04117A Lawnmower Grass Bag, for MTD Troy Bilt 21" Mowers, Replaces 964-04117B, 664-04011, 664-04027, 664-04034, Fit TB110/130/210/230/260/280/280ES (Catcher Frame Not Included)

What It Is

This is a replacement grass bag for MTD and Troy-Bilt 21-inch walk-behind mowers, designed to catch clippings during mulching or bagging. It fits models in the TB110, TB130, TB210, TB230, TB260, TB280, and TB280ES series.

Fitment & Compatibility

Check these before buying:

• Deck size: Fits only 21-inch mower decks. Measure your mower’s cutting width—anything larger or smaller won’t work.
• Model series: Confirmed for TB110 through TB280ES. Double-check your mower’s model number (stamped on the deck or under the seat) against this list.
• OEM vs aftermarket: This is a direct replacement for OEM part numbers 964-04117B, 664-04011, 664-04027, and 664-04034. It also replaces the earlier 964-04117A. If your mower uses a different bag (e.g., 964-04117C), verify dimensions.
• Frame not included: This bag attaches to your existing catcher frame (the metal or plastic support that mounts to the mower). If your frame is broken or missing, you’ll need to buy a separate frame kit.
• Measurements: Bag is roughly 18" x 12" x 8" (folded) with a 6-inch-wide opening. Compare to your old bag for fit.

Key Things to Know

• Installation: Easy hook-and-loop or clip attachment—no tools needed. Takes under 2 minutes to swap.
• Durability: Users report the fabric is thinner than OEM. Expect 1-2 seasons of regular use before seams or zippers wear out, especially if left in direct sun.
• Bag capacity: Holds about 1.5 bushels (10-12 lbs of wet grass). For larger lawns, you may need to empty it more often.
• Common gotcha: If your mower’s frame has a plastic tab that locks the bag in place, ensure this bag’s mounting bracket aligns with it. Some aftermarket bags have slightly different tab spacing.

Should You Buy It

Buy this if you need a budget-friendly replacement for a worn-out original bag on a TB-series 21-inch mower, and your catcher frame is still intact. It’s not built for heavy commercial use, but for home lawns it’s a solid value. If you need a bag with a frame, or your mower isn’t in the listed model range, look elsewhere.