RSK done, now rear SD springs, what years fit?

JCart

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Been researching and can’t seem to find what years of rear springs can be used on my OBS sig truck. On my red truck I used 2003 SD springs and was wondering what late model ones might work? Have installed a PMF 3.5 RSK in the front with MY 2000 V codes (5200lbs), for now gonna use stock springs with 5” blocks and air bags in the rear. It’s getting more challenging to find the early SD parts where I live that are in reasonable shape. Will 2011 SD rear springs or newer fit?

TIA,
 

Strokersace

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08+ rear springs are longer than the 99-07 (and OBS).

You can run them, just buy some relocation mounts from PMF. If I was building an OBS again, that's what I'd do.
 

JCart

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08+ rear springs are longer than the 99-07 (and OBS).

You can run them, just buy some relocation mounts from PMF. If I was building an OBS again, that's what I'd do.

Thanks Strokersace. I’ll check into 08+ rears and have a look at PMF too, really pleased with my RSK from Trevor, top drawer fit and quality parts.

Thanks again,

j
 

Short Bus

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i ran 2002 or 2003 springs on my 96 when i did the rsk, superduty axle and spring swap.
 

JCart

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Can someone confirm the length of ‘08 rears and if ‘14-18s are even longer? Gotten mixed info me thinks. Someone mentioned the other day that 2014-2018s are the rear spring packs to have...
Thanks j
 

Towerguy

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There are differences in the spring packs between some year groups but there are only two spring lengths. 1999-2007 Super Duties use the shorter length spring pack. 2008-2016 use the longer length spring pack. In 2011, Ford changed the spring pack, it is supposed to be smoother riding. However it is still the same length as the 2008-10.
 

JCart

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There are differences in the spring packs between some year groups but there are only two spring lengths. 1999-2007 Super Duties use the shorter length spring pack. 2008-2016 use the longer length spring pack. In 2011, Ford changed the spring pack, it is supposed to be smoother riding. However it is still the same length as the 2008-10.

Beauties thank you for the clarification!

j
 

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