AST Suspension Lowering Springs (20mm/20mm) - 1997-2004 Porsche Boxster (986) F-350 Shelby GT500KR Chassis Code S197

Shelby GT500KR Chassis Code S197 Bushing Color Black Bushing Material Polyurethane Durometer 85 Grade Type Premium Installation Difficulty Moderate Installation Time (hrs) 1

2009 Subaru Forester X Limited

AST Lowering Springs for the 1982-1986 Porsche 944 are manufactured from a premium high tensile chromium-silicone wire which is handpicked by AST engineers for its quality and metal consistency

2004 BMW 3 Series 4 Cyl AWD/RWD (E91/E93)

The Tanabe Sustec Pro CR Coilovers for the 2006-2007 Mitsubishi Lancer Evolution Evo 9 (CT9A) deliver a refined balance of comfort and performance with fully adjustable ride height

AST Suspension Lowering Springs (20mm/20mm) - 1997-2004 Porsche Boxster (986) F-350 Shelby GT500KR Chassis Code S197AST Lowering Springs for the 1997 2004 Porsche Boxster (986) are manufactured from a premium high tensile chromium silicone wire which is handpicked by AST engineers for its quality and metal consistency. Each spring is cold wound and then heat treated to increase hardness and reduce internal stresses present after winding. Each spring is then individually shot peened, phosphate treated and then powder coated to outlast even the life of the vehicle.