General description maXpeedingrods T6 lowering coil-overs are designed for BMW 3 Series E46 M3 models from 2000 to 2006. These coil-overs feature adjustable rebound damping, separate height adjustment without changing preload, and upgraded racing springs. They provide enhanced performance tuning capabilities and an impressive appearance for your vehicle. All coil-overs are assembled in a dust-free factory, ensuring high quality and durability. Technical specifications Height adjustable: Yes, lowering 25-75mm depending on vehicle models Damping adjustable: 24 levels of rebound damping force Front top mount structure: Pillow ball bearing camber plate Rear top mount structure: Standard rubber Spring rate Front: 8 kg/mm (448 lbs/in) Spring rate Rear: 12 kg/mm (672 lbs/in) Front spring inner diameter: 70.5 mm Rear spring inner diameter: 62 mm Spring length Front: 180 mm Spring length Rear: 140 mm Spring preload advised: 7-10 mm Shock structure type: Twin-tube Camber adjustable: Available