C13, racing comfortable saddle - Brooks England - Cambium Saddle
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Brooks Cambium C13 Saddle - 132 mm - Black
Carbon-13 nuclear magnetic resonance - Wikipedia
Review: Brooks Cambium C13 | road.cc
C13
Brooks England's C13 Saddles are in Stock and I've Been Riding One | The Radavist | A group of individuals who share a love of cycling and the outdoors.