AST BMW G21 M340i xDrive Touring Lowering Springs BFCM_M135i (F20/F21) tuning potential

tuning potential

- 1-Year SHFT warranty

Glue is not included

adding that extra aggression to your lights

AST BMW G21 M340i xDrive Touring Lowering Springs BFCM_M135i (F20/F21) tuning potentialGive your BMW G21 M340i xDrive Touring the extra stance it needs with AST lowering springs. AST Lowering Springs 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