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Message: <blockquote data-quote="skidsteer.ca" data-source="post: 19617" data-attributes="member: 307">I think its possible, but not vary cost effective, as far as the dealers go if you want 2 speed you order it that way. The cost of parts plus labor for the conversion it not cost effective for a dealer. Now if your donating your labor the parts a likely still too much unless you can source used as pointed out. You would need to find a donor machine to rob parts and it would still be quite a bit of work. I hi flowed my 160 but we had a few days worth in that one too. I believe the 2 speed works by deviding the wheel motors into 2 sections for each side. On low speed the pump oil is flowed though both sections result in lower rpm output and hi torque.  On hi speed it is blocked from the one 1/2 of the wheel motor, resulting in hi speed at a considerable loss of torque to the wheels. The valving is switched electrically. I have only used a 2 speed machine (873) a few hours, but you need a farely smooth surface to run a machine with such a sort wheelbase at 12 mph. I was spading tree but found the  extra speed was not worth shifting it up and down (flip switch)I also tried a Gehl out the other day and with the joystick option they are up to 8.8 mph on single speed which was nice on the short parking lot cruise I  gave it.Ken</blockquote>