The Bolt comes from the factory with plastic steering bearings as well as a wavy line in the front tire. Some riders experience with either or both of these causing a very obvious and in extreme case violent wobble when letting their hands off of the handlebars.
Steering bearings #
Replacing the steering bearings with solid metal bearings solves the issue for most riders. This fix has the highest percentage of correcting the issue and should be the first attempted solution.
Hard Mount Kit #
This kit will allow you to install flush mount/hard mount handlebars and remove any of the wobble that may remain from the rubber bushings. The thick spacer will sit inside the top of the triple tree and the thin spacer will go around the rubber bushing on the bottom of the triple tree. This does not fix the death wobble directly but rather it can fix any forward/backward handlebar wobble that may remain from changes like higher bars.
Stock Tires #
The wavy line in the stock front tire can cause this even after replacing the steering bearings. Get a front tire with no wavy line down the center.
Low rear tire pressure #
When the rear tire pressure is low there may also be what feels like a death wobble in the front tire, especially around turns.