One of the first mods to my 6 was to install Grip Puppies! A simple and effective mod which increased the diameter over stock grips at a bargain price. With 33K miles on my 6, I'm on my second pair. Be it hand oils or UV light, the foam begins to deteriorate every 12/14 months. I'm still impressed with their comfort and have no less than 4 pairs for spares. I keep a pair in the left cubby. I also keep a spritzer bottle with a 50/50% water/ammonia mix for cleaning my wind shield. This mix works great as a lubricant for installing the Puppies