The APR Roll-Control Coilover suspension system is designed to dramatically improve handling while providing a stylish visual upgrade to your vehicle's appearance. All of this is made possible while maintaining the comfortable and exciting daily driving experience expected from a premium system. With this system, you will experience a harmonious balance between springs, struts/shock absorbers and bump stops through careful spring selection, and damping only possible through the use of non-generic components. This system is built to last. Unlike bargain systems, we only use premium quality materials. The spacers are stainless steel, with anodized aluminum spring seats, allowing years of height adjustment without worrying about rust destroying the threads. The springs are made from a high tensile strength chrome silicon that greatly resists sag. Spring seats feature a locking collar, instead of a set screw, which prevents common failure. Thick stainless steel stabilizer bar mounting tabs are strong and allow adjustment for proper orientation. There are no worries of end link binding issues, and they won't bend like the thin aluminum systems found on even some of the higher end systems. Finally, every shock and shock absorber is dyno tested for quality assurance. This system offers top quality components and the driving experience you expect from APR. Features: Easy height adjustment: 50mm front and 25mm rear Lower up to 55mm all around, based on factory ride height Improved handling, precise cornering response and improved grip Designed for road and track use Adjustments : height, corner weight and sway bar end link position Stainless steel monotube strut design Excellent weather resistant materials corrosion throughout High tensile chrome-plated silicone springs Anodized aluminum spring seats for superior corrosion resistance Locking collar front spring seats Every shock is dyno tested Vertical stop collar with integrated keyway Bumpers application-specific suspension springs Rear dust boots included Noise-canceling spring isolators Included height adjustment tools prevent stripping of wire TIG-welded components Serviceable front spacers Made in the USA