A leaf spring suspension system for a vehicle includes a chassis rail. Also included is a pivot block operatively coupled to the chassis rail and rotatable relative to the chassis rail. Further included is a leaf spring operatively coupled to the pivot block proximate an end of the leaf spring. Yet further included is a half leaf spring operatively coupled to the pivot block proximate a first end of the half leaf spring and operatively coupled to a vehicle axle proximate a second end of the half leaf spring.