C4 was founded in February 1986 in order to create and build carbon fiber projects by engineer Marco Bonfanti. The first pieces made were bike racing frames and forks. C4 had always used its own system of molding the carbon structures: NJC – No Joint Construction, which enables the building of hollow structures without joints.

C4 CLASS / photo: recikli

photo: velospace.org

photo: augenwesen.com