A suspension system includes a composite leaf spring having a mounting
segment of a tapered width combined with an expanding depth. Any position
along the longitudinal length of the mounting segment provides a singular
cross-sectional shape taken parallel to an axle beam. An axle beam
attachment system defines a cavity having a shape equivalent to the leaf
spring at the predetermined location for mechanically interlocking the
axle beam attachment system with the leaf spring at that predetermined
location.