Abstract: An anti-roll suspension stabilizer for a vehicle having a leaf spring suspension system. The device features an elongated stabilizing spring communicating roll resistance to the attached axle of the vehicle at a center section and concurrent force at each of two ends of the stabilizing spring to the leaf spring of the vehicle through an attachment thereto using a shackle. Adjustment of the device is achieved by use of a plurality of mounting apertures for the shackles located at varying distances from the center of the stabilizing spring thereby allowing for adjustment by the user for desired performance characteristics. Further force adjustment is achieved using one or a combination of an optional axle spacer which can be made from one or both of solid rubber like material, or a pneumatic pillow which can vary in dimension, which would be located at the center section of the stabilizing spring where it communicates with the axle.