2026 Exmark Radius E-Series RDE691GKA54200

Information

2026 Exmark Radius E-Series RDE691GKA54200

Discover the Exmark Radius E-Series Mower

With the performance you expect from Exmark, new features and a fresh new look, the Radius E-Series is the right choice for home and acreage owners looking for a commercial-grade mower without breaking the bank. Choose from 48-, 54-, or 60-inch Exmark Series 2+ cutting decks and a wide range of available accessories for maximum versatility. And with new Kawasaki V-twin engine options, Radius E-Series models deliver more performance per dollar than ever before. Check out the Radius S-Series and Radius X-Series models if you’re looking for even more features and productivity. (RD models coming in 2026.)

Features may include:

Adjustable Rollover Protection System (ROPS)

New square tubing rollover protection system (ROPS) is easily foldable for storage.

Height of Cut Made Easy

Exmark’s patented cut height adjustment system is very easy to use, enabling the user to quickly set height of cut with unmatched accuracy, right from the operator seat.

High-Strength 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.

Series 2+ Cutting Deck

Fabricated and fully welded from high-strength steel, the Exmark Series 2+ cutting decks feature maintenance-free sealed bearing spindle assemblies and durable double-capture anti-scalp rollers to deliver the cut quality and durability you expect from Exmark.

Integrated Hydro Pump and Motor Design

Dual HydroGear ZT-2800 hydro transmissions feature an integrated pump and motor design for maximum efficiency, long-term reliability and ground speeds of up to 8 mph.

Large Drive and Caster Tires

Radius E-Series models are equipped with large, smooth-riding 22-inch drive tires and 13-inch caster tires.

Photos

Highlights

  • Rudyard, Michigan
  • 2026
  • Exmark
  • Radius E-Series RDE691GKA54200
  • Model: FR691 | Series: V-Twin | Spec: AS43-R
  • Hydrostatic | Brand: Hydro-Gear | Two Hydro-Gear ZT-2800 hydro static transmissions with no hoses and integrated cooling fans and integrated reservoir | Speeds: Infinitely Variable
  • Gas Carbureted
  • Available
  • 66.5"
  • 73.7" | Cutting: 1.5" to 5.0" in 0.25 increments

Specifications

  • 2026
  • Exmark
  • Radius E-Series
  • RDE691GKA54200
  • Zero-Turn Mower
  • Model: FR691 | Series: V-Twin | Spec: AS43-R
  • Kawasaki
  • Electric
  • 691 cc
  • 24.5 hp
  • 3,600 rpm
  • Standard Engine Manufacturer's air filter
  • Carbureted | Fuel Indicator: Float gauge
  • Gas Carbureted
  • Engagement: Electromagnetic 105-ft-lb clutch
  • Hydro-Drive | Drive Wheel Release: Allows unit movement without engine running.
  • Control: Hydraulically dampened twin levers adjustable both fore and aft. Also has 2-position height adjustment.
  • Hydrostatic | Brand: Hydro-Gear | Two Hydro-Gear ZT-2800 hydro static transmissions with no hoses and integrated cooling fans and integrated reservoir | Speeds: Infinitely Variable
  • Operator Presence Controls (OPC) and drive system interlock.
  • Caster: 13 x 6.5-5 smooth-tread, pneumatic.
  • 22 x 10-10 K3012
  • 12 volt battery with 15-amp alternator
  • Forward: 8.0 mph | Reverse: 0–4.0 mph
  • Blade: Approximately 18,500 fpm.
  • 10-gauge high strength alloy top that is formed and continuously seam welded, with 7-gauge side skirt. | Tractor: Unibody, welded, heavy-duty 1.5" x 3" tubular steel.
  • Casters Forks: .375" thick caster yoke arms. | Blade Spindles: No maintenance, sealed and non-greasable spindles; 7.75"-diameter cutter housing with 25mm (.98") diameter spindle shaft.
  • 66.5"
  • Deck: 54"
  • 83.9" | Blades: 3 Blades at 18.75"
  • 73.7" | Cutting: 1.5" to 5.0" in 0.25 increments
  • Blade Cutter Housing: 7.30" | Blade Shaft: 0.67"
  • 7-gallon single fuel tank with single fill location
  • Curb: 826 lbs.
  • UPC: 193308243757 | Hour meter, cup holder, hitch
  • Deluxe, two-tone, bolstered seat with flip up armrests and integral safety switch
  • 7-gauge top that is formed and welded, 12-gauge side skirt and .375" welded bumper. 4 point suspension. | Style: Floating Deck | Lift: Foot pedal, single point drop pin HOC |Style Description: Series 2 plus fabricated and welded steel deck. | Tractor Frame: Unibody, welded, heavy-duty 2" X 3" rectangular tubular steel.