BMW Z4 M (E85) 2006-2008 - Muller 1-Way Series Coilovers Spring Upgrade:Swift Springs or HyperCo Substitute We insist on building bespoke

We insist on building bespoke suspension in order to offer some of the best quality control in the industry

24-Step Rebound Adjustability

Please note: optional performance upgrades are not included in this service

We now use a high-quality radial Koyo Japan bearing that integrates into the upper spring perch

BMW Z4 M (E85) 2006-2008 - Muller 1-Way Series Coilovers Spring Upgrade:Swift Springs or HyperCo Substitute We insist on building bespokeCUSTOM. MODULAR. REBUILDABLE. In conjunction with Fortune Auto engineers and Muller Suspension specialists. All Muller Suspension systems are designed with maximum performance and ride quality in mind. Muller suspension systems are truly bespoke in utilizing industry lading machining methods and materials. Designed for High line Vehicles and Exotic Supercars. Amsoil Synthetic Shock Oil Flow Digressive Piston Technology Swift Springs standard on most