I have installed a few of the units and have heard back that everyone loves them, a few had tried Rev Techs and just thru them away and went to the Ultimas, we did have one that had a main seal leak and a broken return spring and we called them up and they said hey it is still under warranty and they sent a new one right out and did an exchange just for the seal and spring "$10.00 parts", their customer service was great and I would not be afraid to install one in any bike and the best was they asked for the old MSO for the unit and they sent a new one out for the replacement and if we read it right that a new warranty went into effect from the replacement/swap date and was not retro dated back as the date of the first purchase so another year to try and break it on their dime