LOL
Imagine a sissor.
Now, imagine you need one shock near the pivot point, closer to the screw that holds the two halves together....and one at the ends, near the tip of the sissor.
Open and close the sissor, and look at the distance the shock closer to the pivot point, and the one closest to the tips have to travel.
Its like that on the axle too....the shocks are far inboard of the tires...so, for the same tire travel, the shocks do not have to travel as far.
A stock shock has 9" of travel....a 3" SL Calmini shock has only a little more than 9" of travel, a Bilstien 5100 for the 3" SL has only 10" of travel....etc.
Same up front...the stock shocks have about 4" of travel, but the stock wheel travel is 7".

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- TJ
2001 Xterra '03 VG33, SE 5 spd, 305/70/16's, Revolvers, UBSkidderz, Doubled AAL's, 3"SL/2"BL, winch/bumpers, skids, sliders, OBA, Snorkel, pine stripes....
Friends don't let friends drive stock.
http://www.gifsoup.com/view/501230/tj-tackling-crawlers-ridge-o.gif