1. Bad Documentation
To be clear: the parts themselves are beautifully crafted. However, it is impossible to use your bike on the street after installing these because there's NO accommodation for brake light switch and brake lever return spring. What??
Win,
This is the case with most every brand of aftermarket rearsets. For the rear brake light you would need to install a brake light pressure switch (http://www.sportbiketrackgear.com/spiegler-brake-light-switch-single-banjo-bolt/) and for the brake return spring you can use this (http://www.sportbiketrackgear.com/woodcraft-brake-pedal-return-spring/).
Personally I do not use the brake return spring when I install aftermarket rearsets. The light switch can be useful still when street riding. We are working on doing a video covering just the light switch install this week and will post it in all of the rearset listings.
Brian Van