As previously stated, RMATV has a warranty on these axles. I bought one, and ride in the dunes all the time. Fit and finish is good, install was easy(directions are ok)...this axle is also for the raptor and blaster, so there is an extra spacer that you will not use.It comes with 4 little spacers, that go on the ends( 1 or 2 per side, depending on the desired width) And then There are two large spacers hollowed out on one side(to house the cir clips)...only use the one on the brake hub side, the axle nut houses the c clip on the sprocket side. So far so good, I don't get 20 feet of air, so I don't know the limits of this axle, but for hard duning and draggin up the hill it works great.200$