AST 06/2009-07/2017 Volkswagen Polo Lowering Springs - 25mm/30mm 2015-bmw-228i-xdrive-base-esi8009057 System features Borla(r)'s Polyphonic Harmonizer

System features Borla(r)'s Polyphonic Harmonizer Technology which utilizes patented units that contain pipes of different diameters and lengths to create multiple exhaust notes that harmonize to deliver a clean

Large Ten Layer Performance Air Filter: Momentum™s unique filter-to-housing interface was built to feature the largest air filter possible

BORLA® Cat-Back™ and Axle-Back exhaust systems feature patented straight-through and multi-core technology designed to unleash hidden horsepower

Utilizes Factory Air Inlet and Can be Used with Optional Dynamic Air Scoop (DAS)

AST 06/2009-07/2017 Volkswagen Polo Lowering Springs - 25mm/30mm 2015-bmw-228i-xdrive-base-esi8009057 System features Borla(r)'s Polyphonic HarmonizerThe 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