2026 Bush-Whacker® Flex-Wing Cutters ST-180 Elite

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Year 2026
Make Bush-Whacker®
Model Flex-Wing Cutters

Built for demanding applications, the ST-180 Elite is Bush-Whacker’s premium 15-foot flex-wing brush cutter designed for rights-of-way, roadside maintenance, and government, utility, and contractor use. Based on the proven T-180 platform, it features a smooth top deck for easy cleanup and a reinforced deck and driveline built to withstand continuous, heavy-duty operation. Equipped with a 275 HP divider gearbox and 250 HP spindle gearboxes, the ST-180 Elite delivers reliable performance when cutting thick brush and vegetation up to 4" in diameter. Its flex-wing design follows uneven terrain for a consistent cut, while heavy-duty axles, solid rubber tires, and hydraulic wing lift enhance durability and ease of use. Designed for longevity and serviceability, the ST-180 Elite is a dependable solution for high-capacity mowing in tough work environments.

Features may include:

Heavy-duty 3/8" side skirt with full-length skid shoes

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.

Rated to cut up to 4" diameter brush.

Hinges 3" x 4" tubing with grease fittings.

Drivetrain

Gearbox Divider: 275 hp | Spindle: 250 hp | 540 rpm or 1,000 rpm

Gear Ratio (Primary) 1:1.6

Drive Shaft Category 6 80-degree constant velocity main drive shaft, Category 5 intermediate, and wing drive shafts.

Clutch Slip: Three heavy-duty clutches with spring type adjustment and two friction discs.

Wheels & Tires

Tires, Rear Specification Laminated | Six solid rubber tires standard. Independent shock absorbing system for all-wheel axles. from 2" to 15"

Operational

Operating Speed Bladetip: 16,766 FPM: 540 RPM

Chassis

Deck Thickness 7 Gauge / 12 Gauge

Dimensions

Dimensions 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 on spindle boxes.

Height Cutting: 2"-15" | For aircraft and implement tires: 2″ to 17″

Cutting Width 15"

Overall Width 190"

Overall Length 167"

Transport Width 88"

Weights

Weight 5,520 lbs

Features

Features Safety Deflectors: Chain Guards | Blades: Free swinging when encountering obstructions.

Construction Material Blades: 1/2" by 4" material, alloy spring steel, airlift design.

Adjustability Hydraulic: Hydraulic lift cylinders control raising and lowering of flexible wings. Wings may be raised to 88 degrees above horizontal and lowered to 22 degrees below the horizontal cutting plane.

Warranty

Warranty Mower: 1 Year Limited | Gearbox: 5 Year Limited

2026 Bush-Whacker® Flex-Wing Cutters ST-180 Elite