954-04077 50 Inch Deck Belt for Cub Cadt Troy-Bil MTD XT1 XT2 I1050 LGTX1050 SLT1550 LX500 SL500 GT2100 GT2200 Lawn Mower Replace 754-04077 954-04077A, 5/8" x 134"

What It Is

This is a 50-inch deck drive belt (5/8" wide x 134" long) for Cub Cadet, Troy-Bilt, and MTD lawn tractors with a 50-inch cutting deck. It transfers power from the engine pulley to the spindle blades on residential zero-turn and garden tractors.

Fitment & Compatibility

Before buying, verify three things:

• Deck size: Must be a 50-inch cutting deck (not 46" or 54").
• Model series: Fits Cub Cadet XT1, XT2, I1050, LGTX1050, SLT1550, LX500, SL500, GT2100, GT2200 and equivalent Troy-Bilt/MTD models. Also replaces OEM part numbers 754-04077, 954-04077A.
• Belt dimensions: Measure your old belt’s width (must be 5/8") and length (134" is standard for 50" decks). A mismatched length will cause slipping or deck damage.

Cross-check your mower’s model number (found under the seat or on the frame) with the manufacturer’s parts diagram—some 50" decks use a different belt if the deck is stamped steel or fabricated.

Key Things to Know

• Quality: This is an aftermarket belt, not OEM. It should perform well for residential use, but may wear faster under heavy commercial use or frequent wet grass cutting.
• Installation: Moderate difficulty—requires releasing deck tension via the idler pulley spring. Use a wrench to pivot the idler arm; do not pry the belt on with a screwdriver (risks damage).
• Common gotcha: If the belt squeals or slips after install, double-check the belt routing diagram (often printed on the deck). Reversing the belt around a pulley is a frequent mistake.
• Lubrication: No belt dressing needed—clean pulleys and proper tension are all that matter.

Should You Buy It

If you have a 50-inch deck Cub Cadet or MTD tractor and need a reliable, budget-friendly replacement for residential mowing, this belt is a solid choice. It’s a direct fit for the listed models, with high user satisfaction. Skip it if you mow commercially or need OEM-only for warranty purposes—then buy the original 954-04077A from a dealer.