Notice:No Top Mount Included. Modification Required If You Use OE Top Mount Application: for BMW 3 Series E90 Saloon RWD 2004-2011 316i,318i,320i,323i,325i,328i,330i,335i,316d,325d,330d,335d for BMW 3 Series E91 Estate / Touring 2004-2012 316i,318i,320i,323i,325i,330i,335i,316d,325d,330d,335d for BMW 3 Series E92 Coupe 2005-2013 316i,318i,320i,323i,328i,330i,325d,330d,335d for BMW 3 Series E93 Convertible / Cabriolet 2006-2013 318i,320i,323i,325i,330i,335i,325d Note: Does not fit: not for BMW 320d 318d not for BMW E92 325i, 335i not for BMW E93 330d not for M3 models not for all-wheel Specification: Adjustable height: Front lowering 30-85mm Adjustable height: Rear lowering 30-65mm Spring rate Front: 8 kg/mm (448 lbs/in) Spring rate Rear: 9.5 kg/mm (532 lbs/in) with Front Helper Springs Front spring inner diameter: 62 mm Rear spring inner diameter: 64 mm Spring length Front: 170 mm Spring length Rear: 262 mm Spring Preload advised: 7-10 mm Features: 1. Lower height adjustable 2. Dust