AST Lowering Springs For BMW 6 645Ci/650i/635D 03/2004-12/2010, Front 45 , Rear 40 RS4 (B9)(P) it's important to get it

it's important to get it right

aggressive stance with a ride height reduction of approximately 15-20mm at the front & 10mm at the rear

then simply fit this kit to the end of the pipe to allow the air to be filtered

these side skirts add a clean OEM+ look

AST Lowering Springs For BMW 6 645Ci/650i/635D 03/2004-12/2010, Front 45 , Rear 40 RS4 (B9)(P) it's important to get itThe AST Lowering Springs for BMW 6 Series models 645Ci, 650i, and 635D (03 2004 12 2010) are engineered to enhance vehicle dynamics by lowering the center of gravity while maintaining a high level of ride comfort. Manufactured using advanced cold coiling technology on premium Wafios coiling machines, these springs provide a precise fit and reliable performance tailored specifically for your vehicle. Designed as a direct replacement for the original