Grasscool mulching replacement blades for 54-inch Cub Cadet RZT decks — 6-point star mount, 18-1/2" direct-fit, pre-painted

These Grasscool mulching replacement blades are designed to fit 54" Cub Cadet RZT decks with the 6-point star mounting pattern for reliable mulch cutting and deck compatibility.

If you need durable replacement blades for a 54-inch zero-turn mower deck, this Grasscool set is crafted as a direct-fit alternative to OEM part numbers like 742-0677 and 942-0677B. Each blade follows the 6-point star (5/8") center hole pattern, measures 18-1/2" long with a 1" air-lift and 3" width, and is intended to restore cutting performance on a long list of Cub Cadet, Troy-Bilt, Craftsman and Toro models. The blades come pre-painted for rust protection and safe handling during installation.

How do these blades restore cutting performance?

The Grasscool blades reestablish the deck's airflow and cutting geometry by matching OEM dimensions and the 6-point star mounting pattern. Properly sized blades ensure the deck maintains lift and blade tip speed for clean cuts and effective mulching.

• Exact length: 18-1/2", thickness: 13/64" for durability
• Air lift of 1" supports clippings suspension for mulch
• 3" blade width and 5-7/16" cutting edge length for broad coverage
• Center hole: 6-point star (5/8") for correct mounting alignment

Which mower models will these blades fit?

These blades are made for 54" decks that use the star-shaped 6-point mounting hole, including many Cub Cadet zero-turn models plus several tractors and walk-behind machines from other brands. Verify your current blade’s mounting pattern before ordering to avoid mismatches.

• Cub Cadet: SLT1554, GT1554, RZT54, LGT1054, GT1054 and similar 54" decks
• Troy-Bilt and Big Red: GTX2654, GT54, TB2654, Mustang 54 XP
• Craftsman and Toro models listed with compatible 54" decks
• Replacement equivalents include 742-0677, 742-0677B, 942-0677A/B

What should I check before buying replacement blades?

Confirm the blade’s mounting pattern, overall length, and deck size on your mower. Many 54" decks use different blade patterns (star-shaped versus S-shaped), so matching the center hole and part dimensions prevents incorrect fit and potential damage.

• Identify your blade center hole: 6-point star (5/8") required here
• Measure blade length (18-1/2") and thickness (13/64") to match
• Cross-check OEM numbers if available and confirm deck size is 54"
• If your blades are S-shaped, look up MPN 742-05086 instead

How should I handle and install these blades safely?

Blades arrive painted to protect from rust and to reduce handling cuts; you do not need to remove the paint before first use. Follow standard safety: disconnect spark plug, stabilize the mower, and torque fasteners to manufacturer specs when installing.

• Leave protective paint; it will wear off during normal use
• Wear gloves and use proper tools when swapping blades
• Tighten blade hardware to mower manufacturer torque values
• Inspect blade balance and clearance after installation

Who is this for: This Grasscool blade set is for owners of 54" Cub Cadet and compatible zero-turn decks who need an OEM-dimension replacement with the 6-point star mounting hole. It's aimed at DIY lawn care enthusiasts, professional landscapers maintaining fleet equipment, and anyone replacing worn or damaged blades on the specific models listed—so long as you confirm your current blades use the star-shaped center hole and match the stated measurements.