AST 1974-1984 Mercedes-Benz 107-Series Lowering Springs - 40mm/40mm 2013-gmc-sierra-3500-hd-denali-esi4509887 They will fit vehicles with

They will fit vehicles with and WITHOUT NPP

With ATAK(r)

Fits vehicles with Ground Effects package

Each Adapter Kit is built from premium

AST 1974-1984 Mercedes-Benz 107-Series Lowering Springs - 40mm/40mm 2013-gmc-sierra-3500-hd-denali-esi4509887 They will fit vehicles withThe AST Lowering Springs reduce your cars center of gravity while maintaining the comfort of OEM springs. Designed as a direct OEM replacement, they are vehicle specific and crafted with premium materials on top quality Wafios coiling machines. Their progressive design balances a lowered stance with enhanced performance. With compatibility across over 3,000 models from 1966 upwards, these springs suit a wide range of vehicles. Backed by a lifetime