
KB21
The most cost-effective boom mower system designed for municipal efficiency and budget-friendly performance.

The Terrain King KB21 is the manufacturer's most cost-effective boom and motor system, specifically engineered to provide high performance at an economical price point. It is an ideal solution for municipal mowing tasks, particularly when navigating around guardrails, barriers, and other roadside obstacles.
This mid-mounted boom mower features a low center of gravity for enhanced stability during operation. It is built with a heavy-duty, plate steel kingpost design and greaseable bushings to ensure long-term durability in demanding environments. The system is designed for tractors in the 6,800 lb. weight class and up.
For operator safety and convenience, the KB21 includes a Shields premier right-hand replacement polycarbonate door with Supercoat anti-abrasion coating. It also offers a self-contained hydraulic system and a joystick control option, making it a versatile and user-friendly addition to any vegetation management fleet.
Key Features
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Call (985) 893-3720Specifications
- Model Number
- KB21
- Horizontal Reach
- 21' 7"
- Vertical Reach
- 18' 1"
- Below Grade Reach
- 13' 6"
- Minimum Tractor Weight
- 6,800 lbs.
- Mounting Type
- Mid-mounted
- Hydraulic System
- Self-contained
- Control Type
- Joystick option available
- Rotary Head Options
- 50" or 60" Heavy Duty
- Flail Head Options
- 48" Heavy Duty or Grass Flail
- Saw Head Option
- 69"
- Safety Door
- Shields Polycarbonate with Supercoat