As Jay Leno often comments, in order for new technology to succeed it can't be just good as existing technology, it has to be better.
The Clik system is simply better in every way than presta. I've been cycling for 50 years and I have to put this little valve up there with all the other great equipment improvements. Use Clik one time and you'll be kicking yourself for all the decades spent dealing with the inefficient and troublesome presta system.
