Biltwell Chocolate 1 in. Thruster Grips - 6702-0401. Injection-molded Krayton synthetic rubber. These grips are made from the same material used in dirt bike and BMX grips: Kraton Rubber. They are softer and more comfortable but also wear quicker. Just like a dirt bike, plan on changing them often, depending on how hard you ride and in what conditions.
We recommend using glass cleaner to install the grips and suggest letting them dry overnight. Adding a ring of safety wire on each end is a standard moto practice and all of our grips have grooves to accommodate this.
Note: Using Biltwell rubber grips on H-Ds will often require that your motorcycle is equipped with an aftermarket throttle tube (our Whiskey throttle tube, for instance). The grips do not have a built in plastic throttle tube, they are meant to slide over a higher-quality aluminum tube.