q&p Outdoor Power 918-06981 50" Deck Spindle Assembly with 5" Pulley Replaces 918-06981 Fits Cub Cadet XT1-LT50 and XT2-LX50 with Mounting Screws

What It Is

This is a replacement deck spindle assembly for Cub Cadet XT1-LT50 and XT2-LX50 lawn tractors. It houses the bearings and supports the blade pulley, transferring engine power to spin the mower blades. Designed for 50-inch decks with a 5-inch pulley diameter.

Fitment & Compatibility

• Deck size: Only fits 50-inch cutting decks (not 42" or 46").
• Models: Cub Cadet XT1-LT50 (all variants) and XT2-LX50 (all variants). Does not fit XT1-LT42, XT2-LX42, or older LT-series.
• OEM replacement: Directly replaces Cub Cadet part 918-06981. Aftermarket Q&P part, not OEM.
• Measurements: Pulley is 5 inches outer diameter. Spindle shaft is 5/8-inch diameter. Bolt pattern is 3-hole, 3.5-inch center-to-center.
• Includes: Mounting screws (usually 3 bolts). Check your deck for any additional spacers or washers needed.
• Verify: Measure your existing spindle pulley diameter and bolt hole spacing before ordering. If your deck has a 4.5-inch pulley, this won’t fit.

Key Things to Know

• Quality: Good value for the price; bearings are sealed and pre-greased. Not as heavy-duty as OEM, but fine for residential use.
• Installation difficulty: Moderate—requires removing the blade, belt, and 3 mounting bolts. Use a torque wrench (specs: 30-40 ft-lbs for bolts).
• Common gotcha: The included screws may be slightly shorter than OEM. If your deck has thick spindle mounting plates, reuse the original bolts.
• Bearing life: Expect 2-3 seasons of normal mowing. Noisier spindles indicate bearing wear—replace promptly to avoid blade wobble.

Should You Buy It

Yes, if you own a Cub Cadet XT1-LT50 or XT2-LX50 and need a budget-friendly spindle that works reliably for residential mowing. Skip if you have a commercial-grade mower or want OEM durability—spend more on an OEM replacement. Otherwise, this is a solid, cost-effective fix.