my 2012 dyna switchback vibrates badly about  2800 rpm its a bugger in the lower gears and forces me to change up before this happens,bikes great apart from this anyone got ideas,harley say grind off some of the rubber in the front eng mount it might help mmm

Take it back to the fuckers, get them to work it out, Its under warranty

That appears to be normal for the Switchback, my dealer told me upgrading the exhaust pipes will sort the problem.

Mine vibrates more around 2800 rpm than at other revs but not what I'd call 'too much', just enough to add a bit of character I reckon.

Support the motor weight and loosen the front two bolts on the forward engine mount. Do not remove, just slightly loosen. Then slowly back the bolts out a bit at a time and see if a gap appears between the mount rubber and the frame. If a gap appears you will need to remove one bolt at a time, insert some suitable washers to fill the gap then reinsert the bolts and tighten. This usually will get rid of the high vibes some dynas experience. The elasticity of the mount is being used up in stretching to fill the gap and leaves nothing to absorb the energy from the motor, sometimes giving a high frequency vibe in some revs. It is a five minute job. If you are in Brisbane , pm me and I'll talk you thru it.