EGO ABB1203-1 Commercial Metal Blade Combo Kit for EGO 56-Volt Lithium-ion Cordless Commercial String Trimmer STX3800, STX4500 and Commercial Brush Cutter BCX4500, black

What It Is

This is a three-piece metal blade combo kit (two trimmer blades, one brush cutter blade) designed to upgrade EGO’s commercial string trimmer and brush cutter models from string-only to blade-based cutting for heavy weeds, thick brush, and light saplings.

Fitment & Compatibility

• Exact models: EGO STX3800, STX4500 (commercial string trimmers), and BCX4500 (commercial brush cutter).
• Not compatible with any EGO residential trimmer (e.g., ST1500, ST1620T, ST1510T).
• OEM part – direct replacement, no adapter needed.
• Blade measurements: Each blade has a 9-inch cutting diameter with a 1-inch arbor hole. Confirm your trimmer head’s arbor size (EGO commercial units use 1-inch) before buying.
• Check your trimmer’s guard: The stock guard may need removal or replacement with the included metal guard for blade use (not included in this kit – sold separately as EGO ABG7000).
• Weight limit: Not for use with standard residential EGO trimmers – these blades require the higher torque of commercial motors.

Key Things to Know

• Installation difficulty: Moderate – you’ll need to remove the string head, install the blade, and torque the nut to 30–35 ft-lbs. No special tools beyond a socket wrench and blade lock (or a block of wood).
• Cutting performance: Excellent for heavy grass, blackberry vines, and woody brush up to 1/2-inch thick. Not suitable for mowing lawns – will scalp or tear turf.
• Common gotcha: The kit includes a blade nut but no metal guard. You must buy the guard separately or risk debris ejection.
• Durability: Blades are hardened steel and hold an edge well, but hitting rocks or concrete will chip them. Replacement blades are sold individually (EGO ABB1200).
• Noise/vibration: Louder and more vibration than a string head – expect arm fatigue on long jobs.

Should You Buy It

Buy this if you own an EGO commercial trimmer (STX3800, STX4500, or BCX4500) and need to clear heavy brush, blackberries, or saplings that string can’t handle. It’s a solid OEM upgrade for serious clearing work, but skip it if you only maintain a lawn – you’ll get better results with string. Budget extra for the required metal guard.