CUB CADET 490-110-C178 Xtreme Blade Set Star Hole RZT Enduro Ultima XT1 XT2 ZT1 ZT2 50" Deck

What It Is

This is a set of three OEM-grade replacement blades for Cub Cadet zero-turn and lawn tractors with a 50-inch cutting deck. Designed for high-lift mulching and bagging performance, they replace worn or damaged blades to restore cut quality.

Fitment & Compatibility

Before buying, confirm your mower has a 50-inch deck and uses star-hole (5-point) blade mounting, not an oval or round hole. These blades fit Cub Cadet RZT, Enduro, Ultima, XT1, XT2, ZT1, and ZT2 series models with that deck size. Check your owner’s manual or the existing blade part number—this set replaces OEM part 490-110-C178. Measure blade length (approx. 20.5 inches) and center hole diameter (approx. 1 inch) to verify. Not compatible with 42-inch, 46-inch, or other deck sizes.

Key Things to Buy

• Quality: OEM-spec steel with heat-treated edge for durability; balanced to reduce vibration. High-lift design improves grass discharge but may dull faster in sandy soil.
• Installation: Moderate difficulty. Requires a socket wrench and torque wrench (recommended 70-90 ft-lbs). Use a blade removal tool or block the blade to prevent spinning. Star hole prevents slipping but must align exactly.
• Common gotchas: Always replace blades in sets of three to maintain balance. Check for bent spindles or debris under the deck before installing. Torque to spec—under-tightening can loosen; over-tightening can strip bolts.
• Maintenance: Sharpen or replace every 25 hours of use or at season start. Inspect for cracks or wear after hitting obstacles.

Should You Buy It

If you own a Cub Cadet 50-inch deck model listed above and want a direct OEM replacement that restores factory cut quality, this set is a solid choice. It’s pricier than generic aftermarket blades but saves the guesswork of fitment and balance. Best for homeowners who mow regularly and value consistent mulching or bagging performance over saving a few dollars.