ZIPP Carbon Road Bicycle Handlebar End Plugs - 80.1900.010.000
Because plastic is for Tupperware.    You dont spend all winter plotting, scheming and dreaming of  your ultimate road bike just to pop in some cheap plastic plugs during the build  job. No, that just wouldnt telegraph your true commitment to ultimate  performance at the start line. These babies will. And they dont pop out  mid-ride like the plastic jobs.   Standard equipment with ZIPP tape or available as a set here, if your sponsor  says you have to ride another brand of bar tape. Reserved for only the most  dedicated speed zealots. Uhm, thats obviously you or you wouldnt be reading  this.