Leave the old grips and just spray inside the grip puppies (Beemerboneyard sells something similar for about $10) and the old grips with Windex and they should slide right over the old ones... They will dry within 24 hours (or even shorter on a hot summers day in the sun). They feel great. Much better than the OEM grips.+1 on the grip puppies. They even feel better than the factory grips. Buy a set and try them, they're $20 and take 5 minutes to put on.