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 powder coated to outlast even the life of the vehicle.
Features
- Optimized spring rates Front and Rear for improved dynamics
- Compatible with Adaptive M factory dampers w/ OEM EDC
- Fits all G80 M3, G82 M4, & G87 models (RWD) and (AWD)
Lowering Range
- 20-46mm front
- 10-36mm rear