CUB CADET 490-110-F108 Blade Set 42" 04308 RZT SX XT1 XT2 ZT1 Ultima 42 S L LX42 490-110-C108

What It Is

This is a factory-replacement blade set for 42-inch cutting decks on select Cub Cadet zero-turn and lawn tractor models. Designed for mulching, bagging, and side discharge in residential mowing.

Fitment & Compatibility

What to check before buying:

• Deck size: Must be 42 inches. Measure your deck width if unsure.
• Model compatibility: Fits Cub Cadet RZT S, RZT L, SX, XT1, XT2, ZT1, Ultima 42, Series 1000/2000, and LT/LX42 tractors. Also replaces OEM part 490-110-C108.
• Blade specs: 3-blade set, 18.5 inches long, 0.25 inches thick, 2.25-inch center hole. Verify your blade length by removing one and measuring.
• OEM vs aftermarket: This is a genuine Cub Cadet part. Aftermarket blades may vary in thickness or hole size—confirm exact dimensions if using a different brand.

Key Things to Know

• Quality: Factory blades are hardened steel with a coated finish for corrosion resistance. They hold an edge well but dull faster in sandy or rocky soil.
• Installation: Straightforward bolt-on if you have a socket set and jack stands. Use a blade removal tool or block wood to prevent spinning. Torque bolts to 70–90 ft-lbs.
• Common gotcha: The center hole fits Cub Cadet’s standard spindle, but aftermarket spindles or older models may use a different hole pattern. Always check blade thickness against your spindle washer gap.
• Balance: New blades are pre-balanced. If you sharpen them, re-balance with a simple blade balancer to avoid vibration.

Should You Buy It

If you own a 42-inch Cub Cadet RZT, XT, or ZT series and want a guaranteed fit with factory quality, this is the right set. It’s ideal for homeowners who mow weekly and want reliable cutting without chasing aftermarket compatibility. Skip it if you need a budget option or have a non-Cub Cadet deck.