This Youtube Video may clarify the installation process.
One customer's comments: "The oil window gets blocked. not a huge deal as you can still see it but just not straight on, you have to look at it through a different opening in the fairing. the right side cylinder is offset a few inches aft of the left side... I doubt this is a big deal either but I'll find out on my big ride if I notice. the right side is awfully close to the fairing, not much that can be done about that I guess there is not much room. Overall I like them, but as I said it will take a long highway ride to prove them for real."