Notice:No Top Mount Included, Modification Required If You Use OE Top Mount Application: for VW Golf MK4 1J1 FWD 08/1997-12/2007 for VW New Beetle 9C1, 1C1 FWD 01/1998-11/2010 for Seat Leon 1M1 FWD 11/1999-06/2006 ( Will not fit 4-MOTION (AWD) , VW Golf MK4 R32, and Audi quattro models. ) Specification: Adjustable height: Front & Rear Front lowering 30-90mm (depending on the vehicle models) Rear lowering 30-75mm (depending on the vehicle models) Spring rate Front: 8 kg/mm (448 lbs/in) Spring rate Rear: 6 kg/mm (336 lbs/in) Front spring inner diameter: 62 mm Rear spring inner diameter: 58-63 mm Spring length Front: 170 mm Spring length Rear: 275 mm Spring Preload advised: 7-10 mm Shock type: Twin tube Warranty: 2 years warranty Attention: As it is high performance aftermarket coilover, few modification might be required for some vehicles Package included 2x Front coil-overs 2x Rear coil-overs 2x C spanners Feature: 1. Lower height adjustable (depends on vehicle models) 2. Dust boot,