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I have the KW dampers shown above with front spindles raised 15mm and took a bunch of measurements comparing length, stroke, travel, etc to stock Bilsteins. I don't have those measurements in front of me but what I can remember, both front and rear dampers are made and set up an additional 1/2-3/4 inch shorter which increases the stroke available (not including the additional travel from the raised spindles). Then there's like 2 or 3 stacked bump stops about 11mm long each, which with each removed, further increase the stroke travel. It's like KW engineered the dampers to optimize the operating range between that of a stock later 911 to one lowered significantly. Whereas with the stock shocks, on a lowered 911, you will feel the car hit the bump stops on bad roads making for a hard ride, you don't feel the impact from that anymore with the KWs.
There are two separate knobs with something like 18 clicks each for compression and rebound. You can make the ride from anywhere from softer than stock Boges to stiff enough I think to accommodate much stiffer torsion bars, at least 22/29s, and possibly 23/31s, though I haven't tried it yet. Handling all depends on how you set up the valving. They have modern digressive valves, which blow off sharp impacts. The best way I can describe it is like whereas with stock shocks when drive across to a sharp raised step in a concrete expansion joint, or say a shallow pothole, you can hear and feel the impact in the car, but the KWs that sharp step feels more like you drove over a soft rubber gym floor mat, where you hear it more than you feel it.
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