Quick answer:
The Kubota GM90 tractor engine horsepower found is 87.8 hp. PTO horsepower found is also 87.8 hp.
Engine HP87.8 hp
PTO HP87.8 hp
Power / weight13.9 hp per 1,000 lb
Kubota GM90 Horsepower Specs
| Engine horsepower | 87.8 hp |
|---|---|
| PTO horsepower | 87.8 hp |
| Rated engine RPM | 2,600 rpm |
| Engine displacement | 201.4 cu in (3.3 L) |
| Engine cylinders | 4 cylinders |
| Engine | Kubota 3.3L |
| Operating weight | 6,327 lb (2,870 kg) |
| Power-to-weight | 13.9 hp per 1,000 lb |
| Horsepower class | large compact tractor horsepower |
Horsepower Benchmarks
Engine horsepower benchmark
PTO horsepower benchmark
Operating weight benchmark
Power-to-weight benchmark
Benchmarks are general reference ranges for compact tractors.
Kubota GM90 Horsepower FAQ
| Engine horsepower | The Kubota GM90 tractor engine horsepower found is 87.8 hp. Use engine horsepower for comparing engine output, not necessarily implement power at the PTO. |
|---|---|
| PTO horsepower | The PTO horsepower found for the Kubota GM90 is 87.8 hp. Confirm this against the operator manual because PTO output is often lower than engine horsepower. |
| Horsepower class | The Kubota GM90 is listed as large compact tractor horsepower based on the engine horsepower found. |
| Rated engine RPM | The rated engine speed found for the Kubota GM90 is 2,600 rpm. This is the engine speed used for the listed power rating. |
| Engine specs found | Engine specs found for the Kubota GM90 include Kubota 3.3L, 201.4 cu in (3.3 L) displacement, and 4 cylinders. |
| Operating weight | The operating weight found for the Kubota GM90 is 6,327 lb (2,870 kg). Weight matters because the same horsepower feels different in a light mower than in a heavy tractor. |
| Power-to-weight | The calculated power-to-weight figure for the Kubota GM90 is 13.9 hp per 1,000 lb based on the engine horsepower and operating weight found. |
| Horsepower planning note | When comparing the Kubota GM90, use 87.8 hp as the headline engine figure and double-check the PTO rating before sizing implements. |
Official information note
Mistakes do happen. Check the operator manual, service manual and official kubotausa.com website for official horsepower, PTO horsepower, engine RPM, torque and operating-weight specifications before buying implements or servicing the machine.

