Maserati Quattroporte (M139) 2003-2012 - Muller 1-Way Series Coilovers Spring Upgrade:Swift Springs or HyperCo Substitute 71" x 24" - large

71" x 24" - large garage banner

Offering top tier race technology and durable race proven components

Swift and HyperCo Springs are not available due to the design of the rear spring

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

Maserati Quattroporte (M139) 2003-2012 - Muller 1-Way Series Coilovers Spring Upgrade:Swift Springs or HyperCo Substitute 71" x 24" - largeCUSTOM. 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