The Outerwears Shockwears help to reduce wear and tear on the shaft and seals. Sand and dirt act as sandpaper against the seals and shock shaft so by adding the Outerwear Shockwears you will be reducing the amount of dirt and debris that wear down the shafts and seals.
Pretty good fit. I put it on a klr 650. Took some time but it's worth it to cover. My last shock lasted around 50,000 I think partially due to the fact that I had similar product on it.