AST 11/2015-01/2019 BMW 3 Lowering Springs - 35mm/25mm 2011-gmc-sierra-2500-hd-slt-esi4711931 while the aluminum panels are

while the aluminum panels are finished in a satin black powder coat

and is for vehicles WITHOUT the Active Exhaust feature

For use with factory air intake system

Constructed from Black ABS plastic

AST 11/2015-01/2019 BMW 3 Lowering Springs - 35mm/25mm 2011-gmc-sierra-2500-hd-slt-esi4711931 while the aluminum panels areThe 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