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I am ordering bilstein 5100's for the rear of my f250. It has a 9" lift and is used just for street driving and towing a 21ft. ski boat in the summer. What valving should I run in the rear the H5 has 255/70, T7 has 270/50, and the T5 has 298/36. It would be nice if the T5 was the way to go since they are about $30 cheaper each at 4wheelparts. I just have no idea what those numbers mean can anyone help me out?
 

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I believe you actually need 5125's for that much lift. The 5100 from what I know won't be long enough. Call TruckToyz or post in their sponsor page and Dan or MArty will give you the info you need. :thumb:
 

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they will work the website gave the collapsed/extended lengths and I just need to turn my mounts up on the axle a little bit
why not just buy some proper length 5125's?? no need to touch anything on the axles. the 5100's you can just buy with proper valving for the specific vehicle, but you can have the same valving done to a 5125. I could never find a 5100 that was long enough on the site and I have an 8" lift? I called trucktoyz and they recommended the F4-BE5-6250-H5 which are 34.5" extended. They do show as a 5100 series on some site, but are really 5125's. :dunno:
 
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