This patented design will give you teh most adjustability and best clearance of any arm on the market. Sold as a pair, these adjustable arms come with ball studs that are 12 taller than stock to improve the camber curve. Throw in some caster and the ability to tune camber and you will have a 'modern' feeling suspension. The ball joints are grease - able and rebuildable. Additionally, OE length and 14 extended studs are available to tune your ride or maximize your specific suspension geometry. Considercombining these with SPC's lower control arms and 1 lowering springs to complete the transformation of your Pro Touring, Track Ready, or daily driving street use American Muscle. Sold as pairs. US Patent No. 9,751,370 California Residents WARNING