I have a 2008 rtv 900 only goes around 10mph. If going downhill it will go faster in higher gears. But other than that pretty much same speed in every gear. Revs up fine in neutral, already replaced the fuel filter and all oil filters used kubota oils.
This subject is often discussed at nettractortalk forums the most recent model being the 1140.
Flip, you were told correct... if comparing a Kubota RTV to most other brands, most of whom go for speed and flash-bang instead of strength and towing capability or ability to handle a snow-plow or other implements. I use my little RTV-X900 Diesel to pull 25’ trailers up/down hills here in central Texas and it does it with aplomb. The Kawasaki Mule we have is downright scary to handle above 25 mph, so I suspect Kubota was thinking correctly about speed vs power. My neighbors JD gator is on the C-List so his wife will let him buy a Kubota because his JD won’t haul any[thing.
The Kubotas are big on power to do real work, but if you are in the bass-boat-race mentality then you’d be happier with a Polaris (until you get the maintenance bills or it catches fire) or a Kawasaki Mule (if you don’t mind having a finicky gasoline engine.)
Kubotas top speed is about 25 mph but I warn anyone thinking about going faster.... These UTV/RTV/ATVs are exhiliarating at any speed above 15 and all very capable of loss-of-control when faster than 25 on the terrain for which they are intended. Most are open-design vehicles with very real possibilities of injury above jogging speeds.
http://www.nettractortalk.com/forums/showthread.php?t=15965