8TEN Spindle for Cub Cadet MTD Troy Bilt RZT-S42 ZT1 ZTS2-60 Mustang XP 30 42 60 inch Decks 918-04822 618-04889

What It Is

The 8TEN Spindle is a replacement spindle assembly for zero-turn and lawn tractor mower decks, designed to mount and spin the mower blade. It’s a direct fit for select Cub Cadet, MTD, and Troy-Built models with 30-, 42-, or 60-inch decks.

Fitment & Compatibility

Before buying, verify your mower’s model number and deck size. This spindle replaces OEM part numbers 918-04822 and 618-04889. It fits Cub Cadet RZT-S42, ZT1, ZTS2-60, Mustang XP, and similar MTD/Troy-Built zero-turns with 30-, 42-, or 60-inch fabricated or stamped decks. Critical check: measure the spindle shaft length (typically 2.75–3.5 inches) and bolt pattern (usually 3-bolt, 3.5-inch spacing). Confirm your deck uses a 5/8-inch blade hole. Not compatible with older 48-inch decks or models using a different spindle housing depth.

Key Things to Know

• Build quality: Budget-friendly aftermarket part; bearings are sealed but may not last as long as OEM Cub Cadet spindles in heavy commercial use.
• Installation difficulty: Moderate. Requires removing the deck, unbolting the old spindle (3 bolts), and transferring the pulley and blade. No special tools beyond a socket set and a jack.
• Common gotcha: The spindle housing height may vary slightly from OEM—check blade-to-deck clearance after install to avoid scalping. Also, the included grease fitting is plastic; upgrade to a metal one if you service bearings often.
• No pulley or blade included: You must reuse your existing pulley and blade; ensure they’re in good condition before installing.

Should You Buy It

If you own a Cub Cadet, MTD, or Troy-Built zero-turn with a 30–60-inch deck and need a low-cost, functional replacement for a worn spindle, this is a solid choice. It’s best for homeowners or light-to-medium duty users—skip it for commercial mowing where OEM durability matters more.