Radius X-Series with 22 HP* Kawasaki FX691 Engine and 52” UltraCut Series 4 Deck
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Radius X-Series Model rdx691gka524a3 At a Glance
Fuel Capacity
7 gallon
Speed
9 mph
Cutting Height Range
1.5" - 5.0"
Coverage In Acres
3-5
Acres Per Hour
3.77
Fuel Capacity
7 gallon
Speed
9 mph
Cutting Height Range
1.5" - 5.0"
Coverage In Acres
3-5
Acres Per Hour
3.77
Fuel Capacity
7 gallon
Speed
9 mph
Cutting Height Range
1.5" - 5.0"
Coverage In Acres
3-5
Acres Per Hour
3.77
Discover the Exmark Radius X-Series Mower
If you’re looking for the power and productivity of a premium commercial mower on a budget, you’re looking for the new Radius X-Series. It combines features first proven on our premier Lazer Z models with the unbeatable value you’ve come to expect from Radius.
Choose from 52- or 60-inch UltraCut Series 4 side-discharge cutting decks and premium Kawasaki commercial engines. Integrated high-capacity HydroGear transmissions work with aggressive 24-inch Kenda drive tires to deliver unmatched traction and control, with ground speeds of up to 10 mph. Large semi-pneumatic caster tires, upgraded 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 delivers enhanced operator comfort that’s ideal for long work days.
Looking for more power, larger cutting decks and cutting-edge innovation and productivity? Check out our premier Lazer Z family of commercial zero-turn mowers. (RD models coming in 2026.)
Radius X-Series Features
UltraCut Series 4 Cutting Deck
Fabricated and fully welded of high-strength steel, the UltraCut Series 4 cutting deck features Exmark’s exclusive Flow-Control baffles for Exmark Signature cut quality. Maintenance-free sealed bearing spindle assemblies and upgraded double-capture anti-scalp rollers offer increased durability with reduced maintenance requirements.
Kawasaki Commercial Engines
Radius X-Series takes commercial power and performance to the next level with premium Kawasaki V-twin engines.
High-Back Suspension Seat
Radius X-Series features a deluxe high-back operator seat with three inches of adjustable suspension, plus an EVC stretch foam base and iso mounts at the seat base for superior all-day mowing comfort.
Heavy-Duty Fabricated Steel Frame
Fabricated and fully welded of high-strength rectangular steel tubing, the Radius frame places the heaviest components –– engine, transmission and fuel tank –– low and centralized in the frame. This lowers the machine’s center of gravity for increased traction and stability. New steel engine guards increase engine protection at the sides and rear of the machine, while also being easily removable for service access.
Upgraded Caster Assemblies
Radius X-Series models feature upgraded caster assemblies featuring maintenance-free tapered caster pivot bearings, with cast steel caster forks and large, semi-pneumatic caster tires.
Specifications & Compare
Select a preferred dealer in order to request an estimate on these models.
UPC
Width / Cutting Deck
Onboard Intelligence
Drive
Starter
Steering Control
Front Caster Tires
Drive Tires
Safety Package
Parking Brake
Tractor Frame
Blade Spindles
Cup Holder
Electrical
Standard Features
Seat
Better Together
