2007-13 Silverado/Sierra (Ext/Crew Cab) 2007-13 Escalade/Denali 1 inch or 2 inch Drop 2007-15 Chevrolet Silverado/Sierra (Ext/Crew Cab) 2007-12 Escalade/Denali 1 inch or 2 inch Drop Belltech 12463, 2007-15 Chevrolet Silverado/Sierra (Ext/Crew Cab) 2007-12 Escalade/Denali 1 inch or 2 inch Drop , Pro Coil Lowering springs Belltech Pr-Series lowering coils come with a spacer to enable you to fine tune your ride height and allows for var Here is the situation. You do your research and figure out what lowering you want to match your wheel and tire combination, and install the kit. Now you are thinking that you really wanted another 1 inch lower on the front. What do you do? If you have a set of the Belltech “PRO” Coils in your kit it’s not a problem. This Belltech advanced lowering kit which includes Belltech‘s high quality coil springs and engineered vehicle specific upper spring or strut mount spacers allowing you to have 2 lowering height options with one purchase. Belltech 12463