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Gravely 20-G vs Gravely Pro Master 20-H
Verdict: Gravely 20-G vs Gravely Pro Master 20-H
The Gravely 20-G and the Gravely Pro Master 20-H are both lawn tractors — here is how they stack up on the figures that matter. Both are rated at the same 20 hp. Gravely 20-G is the lighter machine (400 kg vs 444 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Gravely Pro Master 20-H is the newer design (1989 vs 1988). Use the full side-by-side spec tables below to weigh the details against your own operation, and confirm with a dealer demo.
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Fit & specs
Gravely
62
Fit score
Best match
Clear
Gravely
62
Fit score
Best match
Clear
Rated power
20 hp
20 hp
Confidence
40%
40%
Guide price
—
—
Overview
Manufacturer
GravelyReference
Gravely (a part of Ariens)Reference
air-cooledReference
air-cooledReference
Engine
Fuel tank
20.1 LReference
20.1 LReference
Displacement
46.98 ciReference
47.7 ciReference
Bore/Stroke
79 x 78 mmReference
83 x 73 mmReference
Power (gross)
14.9 kWReference
14.9 kWReference
Rated RPM
3300Reference
—
Starter
electricReference
electricReference
Starter volts
12Reference
12Reference
Oil capacity
5.7 LReference
5.7 LReference
Power
—
14.9 kWReference
Transmission
Type
shaft-driven gearReference
hydrostaticReference
Gears
8 forward and 4 reverseReference
infinite forward and reverseReference
Oil type
SC10W-30Reference
—
Transmission
—
Eaton 850Reference
Dimensions
Wheelbase
132 cmReference
—
Weight
400 kgReference
444 kgReference
Front tire
16x7.50-8Reference
18x8.50-8Reference
Rear tire
23x10.50-12Reference
4.80/4.00-8Reference
Lawn/turf front
16x7.50-8Reference
18x8.50-8Reference
Lawn/turf rear
23x10.50-12Reference
4.80/4.00-8Reference
Length
208 cmReference
266 cmReference
Width
109 cmReference
—
Height
129 cmReference
121 cmReference
Gravely 20-G attachments
Electrical
Ground
negativeReference
negativeReference
Charging amps
15Reference
20 (Onan)Reference
Battery volts
12Reference
12Reference
Battery AH
42Reference
—
Battery Group
22FReference
—
Attachment overview
PTO & Hydraulics
Front PTO
—
independentReference
Clutch
—
electricReference
Gravely Pro Master 20-H 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.