AST Suspension Lowering Springs (25mm/15mm) - 2015-2019 BMW 3 Series 330E Plug-In Hybrid Sedan w/ M-Sport Suspension (F30) XJS Turbo (S130) are engineered to

Turbo (S130) are engineered to last and deliver improved driving performance

Part Number W71021 Part Name Spring Eye Bushing Vehicle 2004 Chevrolet Colorado Base Chassis Code GMT355 Bushing Color Black Bushing Inside Diameter 18

BSK004 is a packaged solution to your 1995-1996 Subaru Impreza WRX LX (GC/GF) designed to improve performance and enhance the driving experience of your vehicle

1997 Nissan Skyline GT-R AWD (R33)

2017 BMW 3 Series 335i Sedan (F30)

AST Suspension Lowering Springs (25mm/15mm) - 2015-2019 BMW 3 Series 330E Plug-In Hybrid Sedan w/ M-Sport Suspension (F30) XJS Turbo (S130) are engineered toAST Lowering Springs for the 2015 2019 BMW 3 Series (F30) are manufactured from a premium high tensile chromium silicone wire which is handpicked by AST engineers for its quality and metal consistency. Each spring is cold wound and then heat treated to increase hardness and reduce internal stresses present after winding. Each spring is then individually shot peened, phosphate treated and then powder coated to outlast even the life of the vehicle.