SF Racing Air Struts for 1998-2003 BMW M5 (E39)

SF Racing Air Struts for the 1998-2003 BMW M5 (E39) are the best coilovers available for street-driven cars. SF Sport Coilovers were designed to give a wide range of ride height adjustability without reducing the spring travel. Each corner of the car has 32 levels (or clicks) of damping adjustability. This combines both the rebound and compression into one adjustment knob. The coilovers also use rubber top mounts to help reduce the noise that typically comes with high performance aftermarket coilovers. SF Coilovers come standard with an anodized coating to protect against rust and corrosion caused by extreme use and harsh external elements. Each SF Racing Air Strut kit is built using high-strength materials and features precision damping and height adjustability. With SF Racing, you're not just upgrading your suspension—you're unlocking the freedom to dial in your look and performance with confidence. Ideal for those chasing the ultimate stance setup without sacrificing comfort, SF Air Suspension is the trusted choice for form and function. Features Monotube Damper Design – Improves heat dissipation and reduces oil leakage. 32-Level Adjustable Damping – Fine-tune rebound and compression for ideal ride quality. Adjustable Ride Height – Lowers 1-2.5 inches below factory height without sacrificing suspension travel. Independent Lower Mount Adjustment – Maintains shock and spring integrity while adjusting height. T6-6061 Aluminum Construction – Lightweight, corrosion-resistant anodized top mounts, perches, and collars. Electroplated Shock Body – Zinc-coated for rust protection. Low-Friction, Pressure-Resistant Housing – Ensures smooth damping and longevity. Pillowball or Reinforced Rubber Top Mounts – Reduces noise while improving handling. SAE9254 Japanese Cold-Wound Springs – Durable and consistent performance. Japanese NOK Seals & Italian IP Damping Oil – Prevents leaks and ensures high-performance damping. Integrated Dust Boots & Bump Stops – Protects components from debris and wear. 100% Bolt-On Replacement – No modifications required (unless otherwise stated in the Specifications section). Specifications Part Number SF-BM09-03-AS Vehicle 1998-2003 BMW M5  Drivetrain RWD Chassis E39 Damper Model Air Struts Damping Adjustability 1-Way: Rebound and Compression Damper Size - Front 52mm diameter Damper Size - Rear 50mm diameter Spring Rates - Front 8 kg/mm Spring Rates - Rear 6 kg/mm Top Mounts - Front Standard: Aluminum with Rubber Bushings Optional: Aluminum Camber Plates with Pillowball Bushings Top Mounts - Rear Aluminum with Rubber Bushings Suspension Design - Front True Coilover Suspension Design - Rear True Coilover Fitment Notes -