brian D.wrote a review of SRAM Rival 1 GXP Crankset on December 5, 2017
Familiarity: I've used it once or twice and have initial impressions
This could be great. But very flaud design. If a company is going to make a system that will work then it needs to be a system that you can buy more of such as more chain rings of other sizes and integrate with existing or Rings that can be purchased. Here is the issue. The Single chain ring, (narrow - wide) is seen on the Sram web site but not offered yet. Also the Rival and Force are not compatible. The Rival chain ring is made with a "hidden" bolt that is build into the chain ring. Thus you can't use any other chain ring. If the other sizes are only offered in "Force" and those are different and not compatible why temp us. This is the new ideal in drive train for sure but give me a break and get it right before you release it. Don't buy this system yet. It's like an 80's one hit wonder. Wait till the system comes out complete system. So you can interchange it.