50 Inch Mower Deck Rebuild Kit for Cub Cadet LT1050 i1050 LGT1050 SLT1550 Troy Bilt TB2450 Spindle 618-04126 Blade 942-04053C Belt 754-04077

What It Is

This is a complete 50-inch mower deck rebuild kit for Cub Cadet LT1050, i1050, LGT1050, SLT1550, and Troy-Bilt TB2450 tractors. It includes three spindles (OEM 618-04126), three blades (OEM 942-04053C), and one deck belt (OEM 754-04077) — everything needed to refresh a worn or damaged cutting deck in one purchase.

Fitment & Compatibility

• Deck size: This kit is designed for 50-inch fabricated or stamped decks only. Measure your deck width before buying — 48-inch or 54-inch decks require different parts.
• Model check: Confirmed fit for Cub Cadet LT1050, i1050, LGT1050, SLT1550, and Troy-Bilt TB2450. Double-check your model number under the seat or on the frame tag.
• OEM vs aftermarket: Spindles and blades are OEM Cub Cadet parts; the belt is an OEM replacement (754-04077). No adapters or modifications needed if your deck uses these part numbers.
• Measurements: Blades are 18.25 inches long with a 1-inch center hole and 0.25-inch offset. Spindles have a 5/8-inch shaft and 4-bolt mounting pattern. Belt is 1/2-inch wide by 140.5 inches long.

Key Things to Know

• Installation difficulty: Moderate — requires basic mechanical skill, a socket set, and a jack to lift the mower. Expect 1–2 hours. Watch for rusted spindle bolts; penetrating oil is recommended.
• Quality: Spindles are OEM Cub Cadet, which means better bearings and seals than generic replacements. Blades are medium-duty; upgrade to high-lift blades if you bag frequently.
• Common gotcha: The belt routing is specific — consult your owner’s manual or a diagram online. Running the belt wrong will cause premature wear or slipping.
• Value: Buying individually would cost ~$140+; this kit saves about $35. However, if you only need one spindle or blade, skip the kit and buy separate.

Should You Buy It

Buy this kit if your 50-inch Cub Cadet or Troy-Bilt deck is showing signs of wear (vibration, uneven cut, belt slipping) and you want a single, cost-effective refresh with OEM-quality parts. It’s ideal for DIY owners who can handle basic mechanical work. Skip it if you only need one spindle or blade, or if you prefer aftermarket parts to save a few dollars.