Exmark Radius S-Series with 23 HP* Kawasaki FR691 Engine and 48” UltraCut Series 3 Deck (Available Spring 2026)

$7,327.73*

*Prices subject to change. Please contact for latest pricing.

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Stock status: Call Store for Availability

With a compelling blend of speed, power, cut quality and value, the new Radius S-Series is the ideal zero-turn mower for home and acreage owners that demand advanced performance. Choose from 48-, 52- or 60-inch UltraCut Series 3 side-discharge cutting decks equipped with Exmark’s exclusive flow-control baffles for superior cut quality. The deluxe high-back seat features adjustable spring suspension, with molded flip-up armrests to deliver superior all-day comfort for operators of virtually any stature.Radius S-Series models are designed for maximum durability with reduced maintenance needs. With just two annual grease points, low-maintenance HydroGear transmissions, reliable Kawasaki engines, and long-lasting components, the Radius S-Series is designed to run stronger and longer with less maintenance.Looking for even more power, productivity and durability? Check out the new Radius X-Series zero-turn mower. (RD models coming in 2026.)

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Specs

Surcharge may apply. See details.

UPC

193308243771

Width / Cutting Deck

48"

Drive

Hydro-Drive

Starter

Electric

Steering Control

Hydraulically dampened twin levers adjustable both fore and aft. Also has 2-position height adjustment.

Caster Forks

.375" thick caster yoke arms.

Front Caster Tires

13 x 6.5-5 smooth-tread, pneumatic.

Drive Tires

23 x 9.5-12 K3012

Safety Package

Operator Presence Controls (OPC) and drive system interlock.

Parking Brake

Automatic-actuated pawl brake.

Tractor Frame

Unibody, welded, heavy-duty 1.5" x 3" tubular steel.

Blade Spindles

No maintenance, sealed and non-greasable spindles; 7.75"-diameter cutter housing with 25mm (.98") diameter spindle shaft.

Cup Holder

Yes

Electrical

12 volt battery with 15-amp alternator

Standard Features

Hour meter, cup holder, hitch, suspension seat

Seat

Deluxe, two-tone, bolstered suspension seat with flip up armrests and 3" travel

Optional Features

Hour meter, suspension seat and armrests

Engine Brand

Kawasaki

Transmission Brand

Hydro-Gear

Transmission Speeds

Infinitely Variable

Engine Model

FR691

Engine Displacement

691

Engine Series

V-Twin

Fuel System

Carbureted

Speed

Infinitely variable speed selection from 0–9.0 mph forward, 0–4.5 mph reverse

Transmission

Hydrostatic

Engine Spec

AS43-R

Engine Speed

3,600 rpm

Air Filter

Standard Engine Manufacturer's air filter

Fuel Capacity

7-gallon single fuel tank with single fill location

Drive Description

Two Hydro-Gear ZT-3100 hydro static transmissions with no hoses and integrated cooling fans and integrated reservoir

Fuel Type

Gas Carbureted

PTO Engagement

Electromagnetic 105-ft-lb clutch

Drive Wheel Release

Allows unit movement without engine running.

Fuel Indicator

Float gauge

Deck Lift

Foot pedal, single point drop pin HOC lift assist springs

Carb Compliant

No

ROPS

2-post foldable ROPS standard with seat belt.

Deck Style

Floating Deck

Deck Style Description

Full-floating UltraCut Series 3, side discharge standard, with molded discharge chute and option to bag or mulch.

Deck Construction

10-gauge top that is formed and welded, 7-gauge side skirt and .375" welded bumper. 4 point suspension.

Cutting Heights

1.5" to 5.0" in 0.25 increments

Blade Tip Speed

Approximately 18,500 fpm

Blades

2 Blades at 24.5" Length

Width

61.3"

Height

73.7"

Curb Weight

859

Length

83.9"