Top 5 Bike Inventions you must have

These bike inventions will surprise you….

Links
Smartgrips http://smrtgrips.bike/
Add-e http://www.add-e.at/
Lucid Brake 2.0 http://lucidbrake.com/
Raht Racer http://www.rahtmobile.com/
Halfbike 2 http://halfbikes.com/