2026 Bush-Whacker® Flex-Wing Cutters ST-120

Information

2026 Bush-Whacker® Flex-Wing Cutters ST-120

ST-120 Heavy-Duty delivers serious flex-wing performance in a compact 10-foot package. Designed for commercial mowing and property maintenance, it features a reinforced deck and heavy-duty driveline built for tough, continuous use. The flex-wing design follows uneven terrain for a consistent cut, while robust gearboxes provide reliable power for cutting grass and brush up to 4” in diameter. Durable axles, solid rubber tires, and hydraulic wing lift complete a dependable, easy-to-operate solution for demanding mowing conditions

Features may include:

  • Heavy-duty 3/8" side skirt with full-length skid shoes
  • Rated to cut up to 4' diameter brush.
  • Hinges 3" x 4" tubing with grease fittings.
  • Hinges – Structural tubing with grease fittings.
  • 8-bolt mounting on gearboxes – bolt-heads are tack-welded to bottom of deck so one person can tighten the nuts or change the gearbox.

Photos

Highlights

  • Broken Bow, Oklahoma
  • 2026
  • Bush-Whacker®
  • Flex-Wing Cutters ST-120
  • Available
  • Cutting: 2"-15" | For aircraft and implement tires: 2″ to 17″.

Specifications

  • 2026
  • Bush-Whacker®
  • Flex-Wing Cutters
  • ST-120
  • Rotary Cutters
  • Divider: 275 hp | Spindle: 250 hp | 540 rpm or 1,000 rpm
  • 1:1.6
  • Category 6, Category 5 intermediate, and wing drive shafts.
  • Slip: Two heavy-duty clutches with spring type adjustment and four friction discs.
  • Laminated | Five solid rubber tires standard. Independent shock absorbing system for all-wheel axles.
  • Bladetip: 16,768 FPM
  • 7 Gauge / 12 Gauge
  • Cutting Capacity: 4"| Side Skirt Thickness: 3/8" | Blade Size: 1/2" x 4" | Blade Overlap: 8" | 20 splined 1 3/4″ input shaft, 2 3/8″ output shaft
  • Cutting: 2"-15" | For aircraft and implement tires: 2″ to 17″.
  • 10'
  • 140"
  • 167"
  • 88'
  • Approximately: 4,600 lbs
  • Safety Deflectors: Chain Guards | Blades: Free swinging when encountering obstructions.
  • Blades – 1/2" by 4" material, alloy spring steel, airlift design.
  • Hydraulic Adjustments: Hydraulic lift cylinders control raising and lowering of a flexible wing. Wing may be raised to 88 degrees above horizontal and lowered to 22 degrees below the horizontal cutting plane.
  • Mower: 1 Year Limited | Gearbox: 5 Year Limited