just a little bit of hairspray/wd40 or even water/alcohol so you don't end up with throttle grip.. although that probably isn't much of a problem on a road bike?..
or if they have closed ends, just find an air compressor, fit the grips a little bit on the bars and blow some air between the grip and the bars while pushing the grips - they'll go right in with no effort and you won't have to wait until hairspray/wd40 dries.
just a little bit of hairspray/wd40 or even water/alcohol so you don't end up with throttle grip.. although that probably isn't much of a problem on a road bike?..
or if they have closed ends, just find an air compressor, fit the grips a little bit on the bars and blow some air between the grip and the bars while pushing the grips - they'll go right in with no effort and you won't have to wait until hairspray/wd40 dries.