Created to reduce unwanted flex and as an improvement over the spongy stock bushings, and used on M3 GTS/CRT as well as M5/M6, Macht Schnell’s Solid Aluminum Subframe Bushing kit is just the ticket. Bushings are Machined from 6061-T6 aerospace aluminum to provide a firm, solid suspension mounting point from subframe to vehicle eliminating any flexing which greatly improves feel and handling. Learn More