2023 Exmark RADIUS RZX921GKA604A3 Lawn Mowers

If you're looking for the power and productivity of a premium commercial mower on a budget, you're looking for a Radius X-Series. It combines features proven on our premier machines with the unbeatable value and efficiency you've come to expect from the Radius.


Choose from 52- or 60-inch UltraCut Series 4 cutting decks, both with powerful Kawasaki commercial engines ---- a FX801 on the 52-inch, and a FX921 on the 60-inch. The integrated Hydro-Gear transmissions work with aggressive 24-inch Kenda drive tires to provide unmatched traction and control, with forward speeds of up to 10 mph. Large semi-pneumatic caster tires, cast steel caster forks, and tapered caster pivot bearings provide years of maintenance-free performance. And with an adjustable full-suspension operator seat and isolated floor pan, the Radius X-Series makes "mow time" more enjoyable.


Looking for more power, larger cutting decks and cutting-edge productivity and efficiency? With cutting decks of up to 144-inches wide, our Lazer Z line is as good as it gets.

Engine Manufacturer Kawasaki FX921V
Displacement 999cc
Emissions Series: V-Twin
Rated Engine Speed 3,820 rpm
Air Filter Heavy-duty canister air filtration system

Fuel Type Gas Carbureted
Fuel System Fuel Indicator: Translucent Visual

PTO Type Engagement: MagStop electromagnetic 225-ft-lb clutch

Drivetrain Hydro-Drive | Description: Dual Hydro Gear ZT3400, hydrostatic transmission with charge pumps, relief valves and independent, replaceable filters.
Steering Control: Hydraulically dampened twin levers adjustable both fore and aft. Also has 2-position height adjustment.

Parking Brake Lever-actuated pawl brake.
Wheels & Tires
Tires, Front Specification 24 x 12-12 K3012 | Caster: 13 x 6.5-6, smooth tread, pneumatic. Sealed Taper Roller Bearings

Electrical 12-volt battery with 15-amp alternator.

Operating Speed 0--10.0 mph (16.1 kmph) forward, 0--6.0 mph (9.7kmph) reverse.
Top Speed Blade: Approximately 18,500 fpm.

Frame Type Tractor: Unibody, welded, heavy-duty 2" X 3" rectangular tubular steel.

Safety Features Package: Operator Presence Controls (OPC) and drive system interlock, with safety interlock system indicators.

Spindle Diameter Blade Cutter Housing: 7.75" | Blade Shaft: 25mm(.98")
Cutting Width Deck: 60"
Length Blades: 3 Blades at 20.50" | 80.5 in (204.5 cm)
Width 72.3 in (183.6 cm)
Height Cutting: 1.5" (3.8 cm) to 5.0" (12.7 cm) in 0.25" (.6 cm) increments | 70 in (178 cm)

Fuel Capacity 7-gallon (26.5-L)

Weight Curb: 1006

Seat Type Deluxe suspension (adjustable spring suspension) seat with high back, molded foam flip-up armrests, and integral safety switch
Construction Material, Deck Style: Floating | Style Description: Full-floating UltraCut Series 4. Side discharge standard, with molded discharge chute and option to bag or mulch. | 10-gauge high strength alloy top that is formed and continuously seam welded, with 7-gauge side skirt.