Timberen has two options: Severe Service-Slide-In Camper Or Salt Spreader (single), 8,000lbs Standard, 8,600lbs (numbers not reversed). The Severe get stiffer very fast and contact even w...
on my 05 duramax had supersprings and hated the ride when empty. on the 2012 opted for the severe and when loaded they don't touch and the ride is better then the supersprings on or off..