GM21

Grooming Mowers

Maintain a clean and level look with efficient Grooming Mowers. Designed to give a smooth cut on lawns, sporting fields, and golf courses.

5 - 9 ft. (1.5 - 2.8 m) cutting widths
Single- or dual-belt drive with automatic belt idler
High blade speed for thorough cutting and uniform distribution
Cat. 1 iMatch compatible with kit

Features

Cooling fins help extend life of the gearbox

The GM11 and GM21 Series Medium-Duty Grooming Mowers come with a 37.3-kW (50-hp) rugged gearbox. Cooling fins help extend the life of the gearbox.

Spacers make for quick and easy height adjustment

The GM21 Series Medium-Duty Grooming Mowers' stamped wheel yokes with air tires have spacers for quick and easy height adjustment.

High blade-tip speed increases productivity

The high blade-tip speed and precise blade overlap work together to ensure exceptional strength, performance, and a quality cut when using the Frontier™ grooming mowers.

NOTE: Image shown is of GM21 Series Standard-Duty Grooming Mower.

Rounded front enhances mower efficiency

The GM11 and GM21 Series Medium-Duty Grooming Mowers have a rounded, front-tapered rear deck design that allows for close mowing along trees, fences, buildings, and other obstacles.

Specs & Compare

GM21 Grooming Mower FAQs

What is the John Deere GM21 grooming mower used for?

The GM21 is a medium-duty grooming mower built to give a smooth, level cut on lawns, sporting fields and golf courses. The series covers 5 to 9 ft cutting widths, and high blade-tip speed with precise blade overlap delivers a uniform cut and even distribution of clippings.

What gearbox and drive does the John Deere GM21 use?

The GM21 has a 50 hp rugged gearbox with cooling fins that help extend its life. It uses a single- or dual-belt drive with an automatic belt idler.

How do I adjust the cutting height on the John Deere GM21?

The GM21's stamped wheel yokes with air tires use spacers for quick and easy height adjustment. Its rounded, front-tapered rear deck lets you mow close along trees, fences and buildings.

Will the John Deere GM21 work with an iMatch hitch?

Yes. The GM21 is Cat. 1 iMatch compatible with a kit. The GM21 is part of the Frontier grooming mower line, and our team can help you set it up for your tractor.

Where can I buy genuine parts for my John Deere GM21?

Koenig Equipment stocks genuine John Deere parts for the GM21 grooming mower, and our parts teams across Ohio and Indiana can find what you need for your machine. Choose same-day delivery from a nearby Koenig store or pick up in store.

GM21

Grooming Mowers

Rugged gearbox with cooling fins

Quick and easy height adjustments

Quality cut with high blade-tip speed

Deck design increases productivity