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Gravely 20-G vs Gravely 8199
Verdict: Gravely 20-G vs Gravely 8199
The Gravely 20-G and the Gravely 8199 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 424 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Gravely 20-G is the newer design (1988 vs 1980). 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
GravelyReference
air-cooledReference
Four gears (1-4) in two ranges (low-high) with forward/reverse clutches. The directional clutch must be in neutral to shift gears or ranges.Reference
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
14.8 kWReference
Rated RPM
3300Reference
3600Reference
Starter
electricReference
—
Starter volts
12Reference
12Reference
Oil capacity
5.7 LReference
5.7 LReference
Transmission
Type
shaft-driven gearReference
shaft-driven gearReference
Gears
8 forward and 4 reverseReference
8 forward and 4 reverseReference
Oil type
SC10W-30Reference
10W-40 SCReference
Dimensions
Wheelbase
132 cmReference
132 cmReference
Weight
400 kgReference
424 kgReference
Front tire
16x7.50-8Reference
16x7.50-8Reference
Rear tire
23x10.50-12Reference
23x10.50-12Reference
Lawn/turf front
16x7.50-8Reference
16x7.50-8Reference
Lawn/turf rear
23x10.50-12Reference
23x10.50-12Reference
Length
208 cmReference
210 cmReference
Width
109 cmReference
109 cmReference
Height
129 cmReference
112 cmReference
Shipping weight
—
424 kgReference
Ground clearance
—
17 cmReference
Gravely 20-G attachments
Electrical
Ground
negativeReference
negativeReference
Charging amps
15Reference
—
Battery volts
12Reference
12Reference
Battery AH
42Reference
42Reference
Battery Group
22FReference
BCI 22FReference
Attachment overview
PTO & Hydraulics
Pressure
—
82.7 barReference
Pump flow
—
6.4 lpmReference
Mid PTO
—
independentReference
Clutch
—
mechanicalReference
Mid PTO Type
—
1000Reference
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.