AST Lowering Springs For BMW 6 645Ci/650i/635D 2004-01/2011, Front 30 , Rear 25

The AST Lowering Springs are engineered specifically for the BMW 6 Series models 645Ci, 650i, and 635D from 2004-01 to 2011, providing a precise lowering of 30 mm at the front and 25 mm at the rear. Manufactured using advanced cold-coiling technology on premium Wafios coiling machines, these springs ensure superior durability and consistent performance. Designed to lower the vehicle’s center of gravity, they enhance handling dynamics and stability while maintaining a high level of ride comfort comparable to the original equipment manufacturer (OEM) springs. AST’s commitment to quality is evident in the meticulous design and production process, resulting in springs that not only improve the vehicle’s stance but also contribute to a more responsive driving experience. The progressive spring rate design optimizes suspension behavior, allowing for improved cornering and reduced body roll without compromising everyday comfort. These lowering springs serve as a direct replacement for OEM components, ensuring straightforward installation and compatibility with the vehicle’s existing suspension system. With a comprehensive application range covering over 2500 vehicle models since 1966, AST Lowering Springs are trusted by automotive professionals and enthusiasts alike. Each set is backed by a lifetime warranty against breaking, underscoring the brand’s confidence in the product’s longevity and reliability. This warranty provides assurance for both daily driving and spirited performance use. Lowering Specifications Front: 30 mm lowering Rear: 25 mm lowering Progressive spring rate for balanced performance and comfort Cold-coiled for enhanced strength and durability Compatibility BMW 6 Series 645Ci (2004-01 to 2011) BMW 6 Series 650i (2004-01 to 2011) BMW 6 Series 635D (2004-01 to 2011) Designed as a direct replacement for OEM springs