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PROLINE™ HDX 54 in. (137 cm) Mid-Size Mower (50-State Model)

  • Model: 44454
  • UPC/EAN: 21038444543
See All Items in PROLINE™ HDX Mid-Size Gas Walk Behind Mower
  • Made to Last - Your Toro is also built to take on years of rough rides with a bull nose bumper, 7/10-gauge deck, rubber discharge chute and 20" wheels with curb clearance.
  • Quick Adjustment - Changing cut lengths on the go is a snap with a single-point height of cut adjustment.
  • Horizon360® Business Management Software. Work More Efficiently. Run More Profitably.


Contractors know every second not mowing is a lost opportunity, and training your crew on new equipment can cause unnecessary setbacks in time and money. Maximize your efficiency with the Toro Mid-Size ProLine mowers. Not only will your crew be mowing in no time with easy-to-learn controls, but you'll also enjoy top-line reliability and professional cutting performance. You'll love the convenience of the 2-wheel sulky, which rotates 360 degrees and simply folds away when not in use; no more attaching and removing when trailering! And you can rest easy knowing that Toro stands behind its mowers with a 3-year, 750-hour warranty. And as a Toro owner, you'll have access to nearly 3,000 servicing dealers across the U.S. and Canada ready to assist you. Count on it.


Curb Clearance
Curb Clearance
Rear tires and single-point height of cut adjustment make clearing curbs easy.
Single-Point Height of Cut Adjustment
Single-Point Height of Cut Adjustment
Changing cut lengths on the go is a snap with a single-point height of cut adjustment.
20-Inch Rear Tires
20-Inch Rear Tires
Get more control and manueverability on side hills.
Removable Deck Cover
Removable Deck Cover
Easy maintenance with a removable deck cover.
Two-Wheel Sulky (Sold Separately)
Two-Wheel Sulky (Sold Separately)
The 2-wheel sulky (sold separately) simply folds away, meaning no need to attach and remove it when trailering.
Horizon360 system used by contractor
Horizon360® Business Management Software.
Managing and growing your business is hard work. Using a business management software system shouldn't make it harder. That is why we built Horizon360. If you can type and point/click a mouse, you have all the skills required.

For more information click here.


Anti Scalp Wheels Standard
Blade Tip Speed 18,500 ft/min / 5,638 m/min
Box Dimensions 82 in. x 63 in. x 52.5 in. / 208.3 cm x 160.0 cm x 133.4 cm
CARB Compliant CARB Compliant
Caster Tires 11 in. x 4 in. - 5 in. (27.9 cm x 10 cm - 12.7 cm); Smooth
Deck Design 4.5” (11.43 cm) deck depth, 54" (137 cm) 7/10-Gauge High-Strength Steel
Deck Material 7/10 Gauge High-Strength Steel
Deck Size 54 in / 137 cm
Discharge Chute Rubber
Drive Tires 20 in. x 9.5 in. - 8 in. (50.8 cm x 24 cm - 20.3 cm)
Engine 22 HP* Kawasaki® FX
Engine Brand Kawasaki
Engine Displacement (cc) 726 cc
Engine Horsepower 22.0 hp
Forward Mowing Speed Up to 7.0 mph / 11.2 kph
Front Bumper Reinforced Bull-Nose
Fuel Capacity 5 gal. / 18.9 L / 20 Qt.
Fuel Type Gasoline
Height of Cut 1.5 - 4.5 in. / 3.8 - 11.4 cm
Number of Blades 3
Product Type Walk Behind Mowers
Product Use Commercial
Reverse Mowing Speed Up to 3.0 mph / 4.8 kph
Spindle Bearings Maintenance-free
Spindle Housing 8 in / 20.3 cm Cast Aluminum
Start Type Electric
Steering Controls Twin Lever
Transmission Hydro-Gear ZT-3100 135-0139
Weight 701 lbs / 318 kg


*The gross horsepower of these engines were laboratory rated at t 3,600 RPM SAE J1940 and SAE J1995 to meet safety, emission and operating requirements, the actual engine horsepower on this mower may be significantly different.


Title Documents
Proline Midsize Mowers Brochure PDF - Sellsheet-en-us

Parts & Manuals

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**See dealer for Warranty details.

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