I decided that it would be great to take our Yamaha YXZ1000R out to Sand Mountain Nevada for a weekend to see how it would do. The GYTR Torque Assist Gear (TAG) Kit  lowers first gear by 70% and second – fifth gears by 30%. I left the YXZ1000R exactly how I received it for this trip, mostly because I didn’t have a set of dune tires/wheels ready to go.