Ok, I have a certain shock length I can drive with my ----2"lift for example. If they are to long collapsed I permanently go on block with them. And collapsed they will rip my driveshaft or the boot or hit the exhaust or or or.
So I have a certain level of collapsed/expanded length.
So having quite similar collapsed/extended lengths larger diameter shocks have less travel.
For every diameter larger travel goes down for appr 2"
For instance my Bilstein 5100 for 2.5" lift have appr 11" travel. with extended length close to 26.xx
Having the same length the Fox 2.0 have 10"travel and the 2.5 King OEM only 8"
Just look of all the extended and collapsed lengths of all the different shocks and look at the travel.
It´s a bit of work for the OEM shocks because they are not listed with lengths only with lift recommendations.
But believe me the travel of the shock gets less with same overall length with those larger diameters. Not with all and there is a difference between the manufacturers.
travel/extended/collapsed
FOX-980-02-029 Remote Reservoir 5.0" 15.75" 10.65" 0.625" Zinc
FOX-980-02-030 Remote Reservoir 6.5" 18.80" 12.30" 0.625" Zinc
FOX-980-02-404- Remote Reservoir 8.0" 21.80" 13.80" 0.625" Zinc
FOX-980-02-031 Remote Reservoir 8.5" 22.80" 14.30" 0.625" Zinc
FOX-980-02-032 Remote Reservoir 10.0" 26.10" 16.10" 0.625" Zinc
FOX-980-02-039 Remote Reservoir 11.0" 28.10" 17.10" 0.625" Zinc
FOX-980-02-034 Remote Reservoir 12.0" 31.10" 19.10" 0.625" Zinc
Those are the 2.0 shocks smooth body res.
And here are the 2.5 shocks smooth body res.
travel extended/collapsed
FOX-980-02-061 8.0 Remote Reservoir Ø2.5 X 14 25.45 17.50 7.95 Zinc
FOX-980-02-101-A 10.0 Remote Reservoir Ø2.5 X 14 29.45 19.50 9.95 Zinc
FOX-980-02-102-A 12.0 Remote Reservoir Ø2.5 X 14 33.45 21.50 11.95 Zinc
FOX-980-02-103-A 14.0 Remote Reservoir Ø2.5 X 14 38.45 24.50 13.95 Zinc
FOX-980-02-104-A 16.0 Remote Reservoir Ø2.5 X 14 42.45 26.50 15.95 Zinc
King looks a bit different but overall the same. So if you are restricted to a certain length because of the driveshaft issue or so.........
Maybe it´s just a bit harder for me to explain as a native German speaker. So I might talk a bit weird and hard to understand when it´s getting so technical.