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A clincher is the most common type of rim used on bicycle wheels. Clincher bicycle rims are similar to automobile rims in terms of how the tire adheres by means of a ridge on the inside of the rim that clinches a bead running along the inside of the tire.
Cycling Weekly. Mavic Cosmic Pro Carbon SL C. Here is our review of the new Mavic Cosmic Pro Carbon SL C 40mm deep carbon clinchers which have a wider aero profile and are claimed to have much improved wet weather braking performance almost equal to that in the dry. New Cosmic Pro Carbon SL C clincher wheelset has 40mm aero rim profile.