2001-2006 BMW M3 (E46) COILOVERS

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S3 coilover systems may be “Simple” by name, but that’s where simplicity ends. This one-way adjustable coilover kit is engineered using premium components and assembled by hand wit h a focus on precision, consistency, and real-world performance. Spring rates and valving are developed through extensive shock dyno analysis and validated through both street driving and track testing, ensuring predictable handling, control, and long-term durability. Designed as a true bolt-in solution, each kit includes everything required to transform your vehicle from a capable street car into a purpose-driven track machine. Features • 32 levels of rebound adjustment• Gas-pressurized monotube dampers• Swift Springs, custom-selected for each application• Precision-machined shock bodies with corrosion-resistant threads• Independent ride height and spring preload adjustment• Pillowball top mounts for improved steering response• Camber-adjustable top hats (application dependent)• Spherical bearing lower mounts (application dependent)• Zinc-plated hardware for durability (application dependent)• Bump stops and shock dust boots for added protection• Complete bolt-in hardware included Available Configurations StreetBalanced spring rates and valving designed to improve handling while maintaining comfort for daily driving. Street / Track (ST)A more aggressive balance of spring rates and damping, offering improved performance for spirited driving and occasional track use while still remaining streetable. TrackIncreased spring rates and more aggressive damping focused on maximizing grip and chassis response. Not recommended for daily street use. AeroHigher spring rates with revised valving to properly support aerodynamic load from splitters, canards, and rear wings. Custom SpecificationHave a unique setup? Provide your vehicle details and intended use—we’ll build a system tailored specifically to your application. Warranty All S3 Suspension coilover systems include a limited 2-year warranty. Each kit is built with performance and longevity in mind, using high-quality components and precision manufacturing to ensure reliability under both street and track conditions. For full warranty terms and coverage details, please refer to our FAQ page. Show more