8TEN Spindle High-Lift Blade Kit for MTD Cub Cadet 54 inch Deck RZT L54 S54 LX54 GT54 SX54 G8400 G8600 T310

What It Is

The 8TEN Spindle High-Lift Blade Kit is a set of three replacement blades designed for 54-inch MTD and Cub Cadet zero-turn and lawn tractor decks. The high-lift design increases airflow for superior bagging and discharge performance, making it ideal for tall or damp grass where standard blades struggle.

Fitment & Compatibility

Before purchasing, verify your mower deck measures exactly 54 inches from blade tip to blade tip. This kit fits MTD-built Cub Cadet models including the RZT L54, S54, LX54, GT54, SX54, G8400, G8600, and T310. It also fits select Troy-Bilt, Craftsman, and Yard Machines with 54-inch decks using a 3-blade spindle pattern. Each blade has a 1-inch center hole and a 3.5-inch blade length. Measure your current blades: if they’re 18 inches long with a 1-inch arbor hole, this kit is compatible. OEM cross-reference numbers include 742-04327, 942-04327, and 742-04327A. Check your deck’s blade mounting orientation—these use a single bolt per blade.

Key Things to Know

• Quality vs. OEM: These are aftermarket but heat-treated and balanced; they last similarly to OEM blades but cost less. Expect a slight performance edge in bagging due to the high-lift profile.
• Installation: Rated moderate—requires a socket wrench and a blade removal tool to lock the spindle. Torque bolts to 40-50 ft-lbs. No special adapters needed.
• Common Gotcha: High-lift blades increase deck vibration if not perfectly balanced. Spin each blade on a balancer before mounting; return any that wobble.
• Deck Clearance: Ensure your deck has at least 1.5 inches of clearance above the blade tips—low-clearance decks may clog or cut unevenly with high-lift designs.

Should You Buy It

If you own a compatible 54-inch Cub Cadet or MTD mower and prioritize bagging quality or cutting wet grass, this kit is a smart upgrade over standard blades. It’s a reliable, budget-friendly alternative to OEM parts, but skip it if your deck has clearance issues or you only mulch—stick with a low-lift or mulching blade set.