1. RTV-X900/X1100:
- Engine: Kubota 3-cylinder liquid-cooled diesel engine
- Displacement: 898cc / 1123 cc
- Power Output: 25.4 HP (19 kW) / 32 HP (24 kW)
2. RTV-XG850/XG900:
- Engine: Kubota 3-cylinder liquid-cooled gasoline engine
- Displacement: 749cc / 842 cc
- Power Output: 24.8 HP (18.5 kW) / 28 HP (21 kW)
3. RTV400 Series:
- Engine: Kubota 4-stroke, air-cooled gasoline engine
- Displacement: 382 cc
- Power Output: 13.5 HP (10 kW)
4. RTV500 Series:
- Engine: Kubota 4-stroke, liquid-cooled gasoline engine
- Displacement: 498cc
- Power Output: 21 HP (16 kW)
5. RTV1140 Series:
- Engine: Kubota 4-stroke, liquid-cooled diesel engine
- Displacement: 1123cc
- Power Output: 32 HP (24 kW)
6. RTV211/RTV212 Series:
- Engine: Kubota 4-stroke, liquid-cooled gasoline engine
- Displacement: 1083cc
- Power Output: 40.5 HP (30.2 kW)
Please note that the specific engine options may vary depending on the region and model year.