MTD 731-0872B Trailshed

What It Is

The MTD 731-0872B Trailshed is a replacement grass catcher bag assembly designed for select MTD, Cub Cadet, and Troy-Bilt lawn tractors. It collects clippings during mulching or bagging operations, primarily for residential use on mid-sized lawns.

Fitment & Compatibility

• Deck size: Typically fits 42- to 50-inch cutting decks, but verify your deck’s bagging attachment points (hooks, brackets, or latches) match the Trailshed’s mounting system.
• Brand and model: Compatible with MTD, Cub Cadet (e.g., LTX 1040, RZT 50), Troy-Bilt (e.g., Pony, Bronco), and some Yard Machines models. Check your mower’s model number against MTD’s fitment list (available on their site or via customer support).
• OEM vs. aftermarket: This is an OEM MTD part, so it matches original specs. Aftermarket alternatives may be cheaper but often have looser fit or weaker material.
• Measurements: Trailshed dimensions are roughly 22” x 18” x 12” (height/width/depth). Confirm your mower’s bagging chute and frame clearance—especially if you have a tight rear axle or fender setup.

Key Things to Know

• Quality: Made from durable polyester mesh and plastic frame, but the zipper and seams can wear after one to two seasons of heavy use. Inspect for tears before each season.
• Installation difficulty: Moderate—takes 15–30 minutes. You’ll need to remove the old bag, align the Trailshed with the mower’s bagging bracket, and secure it with clips or pins. No special tools required, but a second person helps with alignment.
• Common gotchas: The Trailshed may not seal perfectly with all chute designs—check for gaps that cause clippings to blow out. Also, the bag’s capacity is moderate (about 2.5 bushels); for larger lawns you’ll empty it frequently.
• Warranty: Typically 90-day limited warranty from MTD. Keep your receipt and original packaging for returns.

Should You Buy It

Buy this if you need a direct OEM replacement for your MTD/Cub Cadet/Troy-Bilt lawn tractor and value fit reliability over cost savings. Skip it if you have a non-MTD brand or an older model with a custom bagging system—aftermarket universal bags are cheaper and more adaptable. For occasional residential mowing, it’s a solid choice; for heavy-duty commercial use, look for a reinforced alternative.