Compare/Gravely 20-G vs Gravely GMT 9000

Gravely 20-G vs Gravely GMT 9000

Verdict: Gravely 20-G vs Gravely GMT 9000

The Gravely 20-G and the Gravely GMT 9000 are both lawn tractors — here is how they stack up on the figures that matter. Gravely GMT 9000 leads on rated power with 26 hp against 20 hp. Gravely 20-G is the lighter machine (400 kg vs 666 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Gravely GMT 9000 holds more fuel (26.5 L vs 20.1 L) for longer stints between fills. Gravely 20-G is the newer design (1988 vs 1977). In short: choose the Gravely GMT 9000 for outright pulling power, or the Gravely 20-G if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.

Tune the fit score

Tell us about your operation

Acreage600 acBudgetMain crop / use

Fit & specs

Gravely

Fit score

Best match

Clear

Gravely

Fit score

Best match

Clear

Rated power

20 hp

26 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

GravelyReference

air-cooledReference

liquid-cooledReference

Engine

Fuel tank

20.1 LReference

26.5 LReference

Displacement

46.98 ciReference

51.6 ciReference

Bore/Stroke

79 x 78 mmReference

58 x 80 mmReference

Power (gross)

14.9 kWReference

—

Rated RPM

3300Reference

4000Reference

Starter

electricReference

—

Starter volts

12Reference

Oil capacity

5.7 LReference

9.5 LReference

Power

—

19.4 kWReference

Compression

—

8:1Reference

Firing order

—

1-3-4-2Reference

Sparkplug gap

—

0.635 mmReference

Point gap

—

0.457 mmReference

Intake valve clearance

—

0.127 mmReference

Exhaust valve clearance

—

0.203 mmReference

Transmission

Type

shaft-driven gearReference

Gears

8 forward and 4 reverseReference

Oil type

SC10W-30Reference

—

Dimensions

Wheelbase

132 cmReference

160 cmReference

Weight

400 kgReference

666 kgReference

Front tire

16x7.50-8Reference

20x8.00-10Reference

Rear tire

23x10.50-12Reference

29x12.00-15Reference

Lawn/turf front

16x7.50-8Reference

20x8.00-10Reference

Lawn/turf rear

23x10.50-12Reference

29x12.00-15Reference

Length

208 cmReference

229 cmReference

Width

109 cmReference

129 cmReference

Height

129 cmReference

111 cmReference

Ag front

—

4.00-12Reference

Ag rear

—

9.5-16Reference

Shipping weight

—

666 kgReference

Front tread

—

93 cmReference

Rear tread

—

99 to 109 cmReference

Gravely 20-G attachments

Electrical

Ground

negativeReference

Charging amps

15Reference

—

Battery volts

12Reference

Battery AH

42Reference

—

Battery Group

22FReference

—

Attachment overview

PTO & Hydraulics

Rear Type

—

IReference

Rear PTO

—

independentReference

Rear PTO Type

—

540 (1.375)Reference

Mid PTO Type

—

1893Reference

Gravely GMT 9000 attachments

Fit score weighs budget, operation size, crop match and data confidence against the details above. It’s guidance, not advice — always confirm with a dealer demo.