CUB CADET 490-110-C122 Blade Set 42" Decks RZT XT1 XT2 LX42 LT42 Lawn Mowers

What It Is

This is a genuine OEM 3-blade set for 42-inch cutting decks on Cub Cadet zero-turn and lawn tractor models. Designed for mulching, bagging, and side-discharge use.

Fitment & Compatibility

Before buying, verify your deck measures exactly 42 inches (not 46 or 50). This set fits Cub Cadet RZT, XT1, XT2, LX42, and LT42 series with factory 42-inch decks. Confirm your model number on the deck sticker or owner’s manual—OEM part 490-110-C122 replaces earlier part 490-110-C069. Blades are 16.25 inches long with a 5-point star center hole and 0.25-inch thickness. Not compatible with aftermarket decks or other brands.

Key Things to Know

• Quality: OEM-grade steel, pre-sharpened, and balanced. Expect 20–30 hours of cutting life per blade under normal use.
• Installation: Straightforward bolt-on with a 15/16-inch socket. Torque blade bolts to 70–90 ft-lbs. No special tools needed.
• Gotcha: Always replace all three blades at once to maintain balance. Never mix old and new blades.
• Gotcha: Check spindle bearings and blade bolts for wear during replacement—loose bolts cause vibration and poor cut.

Should You Buy It

If you own a Cub Cadet with a 42-inch deck and want a perfect fit with no modification, this set is the right choice. It’s priced fairly for OEM quality and avoids the guesswork of aftermarket alternatives. Skip it only if you need a different deck size or want cheaper generic blades.