All good points here. I've been running them on both my bikes since new, and no leaking seals on either bike, ever (knock wood!). That's two years on the kTm, and one year on the YZF. I would definitely suggest pulling the fork tubes and putting them on from the top. The way they explained it to me over the phone was to slide them on, then turn the bottom up about an inch, and insert your thumbs in the "pocket" and work them down. One of the best accessories ever invented, IMO. :thumb: