
Introductionma Xpeedingrods T6 lowering coil-over, standard with adjustable rebound damping, separate height adjustment without changing preload, developed damping oil & upgraded racing springs, adjustable camber plate(for some vehicles), & decent outlook, offers you more ability to tune your suspension on performance & gives your vehicle more impressive appearance. Besides, all our coil-overs are assembled in a dust-free factory, which turns out good quality & long life. Application Compatible for Kia Optima 2011 2012 2013 2014 2015 Note: New sway bar link is required for SX trim Specification Damping adjustable: Available, 24 levels of rebound damping force Shock structure type: twin -tube Front top mount structure: Pillow ball Rear top mount structure: Standard rubber Camber adjustable: Not vailable Height adjustable: Yes, lowering 25-75mm depending on the vehicle models Spring Rate Front: 9.0 kg/mm (504 lbs/in) Spring Rate Rear: 7.5 kg/mm (420 lbs/in) Spring length Front: 190 mm Spring le...