The Eibach Pro-Spacer 18mm widens Porsche 911 track width by 18mm per side for enhanced handling. Crafted from high-strength aluminum, this pair ensures precise alignment for 911 coupes and convertibles. Ideal for track or street, it improves cornering grip and stance. Bolt-on installation with corrosion-resistant coating requires proper torque. Lightweight design boosts performance. Includes a limited lifetime manufacturer warranty.