Yes the main benifit is weight, and reduced suspension bind. If you notice where your stock spring is (in the middle of the control arm). You will notice that the wheel rate is (the amount of the springs force acting at your wheel) is only about 50%. With a coil-over setup the spring is at the spindle so now your wheel rate is 90+%. So if you were to compare 600 in/lb springs (for coil-over vs. non coilover)the ride would be almost 2x as stiff with the coil overs since 540 in/lb of the spring force is acting on the wheel, where as only 300 in/lb of the force would be acting at the wheel in the stock setup. So where does the other half of the spring force from the stock setup go? Into your control arm bushings causing suspension bind, ride harshness, and more wear on the bushings (vs. a coil over setup). So there you go.....that's prolly more than you wanted to know

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