Originally Posted by Gangplank
Umm... because they are foam. How long can they last. They are $9 a pair. Mine were $23 for two sets of grips. They are rubber and I expect they will last... umm.... for years probably.
At least 65k miles, which is long than the rubber pro grip 719s on the other bikes and the ISO grips on the cruisers (the rubber just gets icky and peely). There are varying trypes of foam. Grip puppies use closed cell foam.