The adapter that will allow you to use your chainrings with 144 spacing on a road or Tandem crankset with 130 spacing.
 
 The Tandems of the French team medalists at the Tokyo 2020 Olympics have  experimented with Brio. Congratulations Raphael Beaugillet / Francois Pervis  and Alexandre Loveras / Corentin Ermenault   
 
 The kit consists of the adapter as well as 2 sets of KRONOS chimneys