We recommend using WD-40 to install the grips and suggest letting them dry overnight. Adding a ring of safety wire on each end is a standard moto practice.

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.