AST 30mm/25mm F&R Lowering Springs | BMW 3 Series F31 (2012-19) (ASTLS-14-397) t14sold-HH083417 Its unique double hump design

Its unique double hump design ensures a secure

This high-performance aero spoiler features a meticulously engineered design that emphasizes both form and function

especially when paired with lowering springs that enhance the vehicle’s stance and handling dynamics

these bushings replace the factory rubber components to deliver improved responsiveness and durability

AST 30mm/25mm F&R Lowering Springs | BMW 3 Series F31 (2012-19) (ASTLS-14-397) t14sold-HH083417 Its unique double hump designAST Lowering Springs for the 2012+ BMW 3 Series (F31) 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. Features