IntroductionMaXpeedingRods-B2 series(also called MaXpeedingRods-SNA) coilovers are designed as an entry level for street use. It features with full length height adjustable and adjustable camber plates (applicable for some vehicles),which offers you a lowered stance, improved performancefor your daily use vehicle.ApplicationCompatible for Buick Century 1997 - 2005All Models Except Ones w/ 18 Wheels compatible for Buick Regal 1997 - 2004All Models Except Ones w/ 18 Wheels compatible for Pontiac Grand Prix1997 - 2003All Models Except Ones w/ 18 WheelsSpecificationAdjustable Damper: Non-adjustable Top mounts?not included, OE top mounts reuse Spring rate Front: 10 kg/mm (560 lbs/in) Spring length Front: 200mm Adjustable height: lowering 1-3 inch Coilover overall length Front: 375mm-440mm Shock type: Twin tube Spring Preload: 7-10 mm Color: GoldenPackage included2 front shock and spring, no top mountsDimensionsize: 73*28*21mm weight:11480gFeature1. Lowered height adjustment from 1 - 3