Sputhe's PosiTrac Dyna Chassis Stabilizer provides lateral positioning of the Drive train on all 1991-2017 Dyna. Sputhe claims that the PosiTrac totally eliminates lateral Isolator flex that causes swing arm deflection. The result: high speed directional and cornering stability is drastically improved under all conditions. Additionally, safety, comfort and tire life are all increased. The PosiTrac consists of front and rear stabilizer links and brackets. These provide absolute lateral positioning of the drive train and swing arm assembly relative to the frame. The front and rear stabilizers combined with the existing top stabilizer link establish a plane that maintains precise alignment of the steering head and rear axle under all conditions. The PosiTrac Dyna Chassis Stabilizer does not increase vibration, has a quick and easy bolt on installation, does not require any frame modification and does not reduce ground clearance. Fits all Dyna 1991-2017.