These are the HD yellow units which in my experience provide the best handling, ride and control for both empty and loaded on road driving. Fits 2001-2010 Silverado and Sierra 2500HD 2wd and 4x4 trucks at std ride height OR with increased ride height from torsion bar adjustment or torsion bar key replacement provided the spacers noted below are added.

"Flat rate $10 UPS ground shipping (48 states) on all full set orders placed online!" - JK

I highly recommend the spacers for all installations as they cannot have a negative effect and tend to reduce stress on the lower bushings at full extension. For all applications, especially if you have raised the front end make a note in shipping instructions and for $5 we will include a pair of shaft spacers. -JK