AST 40mm/40mm Lowering Springs | BMW 3 Series F30 (12-19) (ASTLS-14-394) YMM_2009_2013_Acura_ZDX_YB1 Proper break-in procedures should be

Proper break-in procedures should be followed to maximize the lifespan and performance of the new clutch system

and support more aggressive driving styles

this kit is suitable for a variety of vehicles

These lug nuts are forged from high-quality titanium alloy

Custom engine builds requiring flexible

AST 40mm/40mm Lowering Springs | BMW 3 Series F30 (12-19) (ASTLS-14-394) YMM_2009_2013_Acura_ZDX_YB1 Proper break-in procedures should beAST Lowering Springs for the 2012 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.