The Eibach Pro-Spacer 12mm enhances BMW M3 handling by widening track width 12mm per side. Made from high-strength aluminum, this pair ensures precise fitment for M3 coupes and sedans. Ideal for track or street, it improves cornering stability and aesthetics. Bolt-on installation with corrosion-resistant coating requires proper torque. Lightweight and durable, it includes a limited lifetime manufacturer warranty.