Silca Replacement Presta Valve Core (Set of 6) Factor Sister of the R2 type

Sister of the R2 type

Weight (Women's size US 8): 177g / 6

Throw on the Shuttles

anti-static and uses Schoeller's Performance fabric and carbon yarn to optimize moisture transfer

Silca Replacement Presta Valve Core (Set of 6) Factor Sister of the R2 typeSo we've always noticed how really expensive tubulars had such nice valve cores with smooth edges and high quality seals that resisted sticking. When we started developing SILCA Tubeless valve stems, we set out to find the best cores, and realized that only a handful of companies make them globally. After a lot of phone calls, emails and discussions, we knew instantly when we had found the ones we were after. Fully CNC machined with roll formed