maXpeedingrods B1 series is ideal for those who want to change the old worn-out strut but improve handling at the same time. It features height adjustable and maintains the OE ride quality to the greatest extent. Notice:No Top Mount Included, Modification Required If You Use OE Top Mount Application: for VW Golf MK4 1J 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 lowering 30-90mm Adjustable height: Rear lowering 30-75mm Damping: Preset Damping with Front helper springs Top mounts: Front and rear OE top mounts required Spring rate Front: 8 kg/mm (448 lbs/in) Spring rate Rear: 6 kg/mm (336 lbs/in) Spring length Front: 170 mm Spring length Rear: 275 mm Spring Preload advised: 7-10 mm Package included： 2 x Front coil-overs 2 x Rear coil-overs 2 x C spanners Package Size: 71*51*21 cm Weight: 20850 g Feature: 1. Lower