Lawnmower Grass Bag 964-04117A 664-04117A FOR MTD Troy Bilt 21" lawn mower 964-04117B 664-04011 664-04027 664-04034 Fit TB110 TB210 TB260 TB130 TB230 TB280ES TB280 (Without Catcher Frame)

What It Is

This is an aftermarket grass collection bag designed for MTD and Troy-Bilt 21-inch walk-behind mowers. It replaces OEM part numbers 964-04117A, 664-04117A, 964-04117B, 664-04011, 664-04027, and 664-04034, and fits models like TB110, TB210, TB260, TB130, TB230, TB280ES, and TB280.

Fitment & Compatibility

• Deck size: Only for 21-inch mowers. Will not fit 20-inch or 22-inch decks.
• Model check: Confirm your mower model (e.g., TB110, TB230). This bag is not compatible with models that require a separate catcher frame (the bag attaches directly to the mower’s rear discharge chute).
• OEM vs aftermarket: This is a non-OEM replacement. Material and stitching may differ from original, but dimensions match the listed OEM part numbers.
• Measurements: Bag dimensions are roughly 18” x 12” x 10”. Measure your mower’s bag attachment hooks and chute opening to ensure a snug fit.

Key Things to Know

• Material: Heavy-duty woven polypropylene. Holds up well to grass clippings but can tear if overstuffed or dragged over sharp edges.
• Installation: Easy, no tools needed. Attach to mower’s rear discharge chute via two hooks and a top strap. Some users report a loose fit on older mowers—check hook alignment.
• Common gotcha: If your mower has a “catcher frame” (a metal or plastic support structure), this bag won’t work. It’s designed for direct attachment only.
• Capacity: Holds about 1.5–2 bushels. Good for small to medium lawns; may need frequent emptying on larger yards.

Should You Buy It

If you have a compatible 21-inch MTD or Troy-Bilt mower and need a budget-friendly replacement for a worn or missing bag, this is a solid choice. It’s easy to install, fits the listed models, and works well for typical residential use. Skip it if your mower requires a catcher frame or if you need a heavy-duty bag for commercial-grade mowing.