SPC Performance Upper Control Arm - Adjustable - Screw-In Ball Joint - Steel - Black Paint - Chevy Fullsize Car 1955-57 (Pair) 3419WH Includes precision-ground crown radius and

Includes precision-ground crown radius and surface finish to promote performance camshaft compatibility and high-rpm durability

GM Fullsize SUV / Truck 1955-66

500 in Head

1-1/8 in Cap

1966-2007 Dodge Charger

SPC Performance Upper Control Arm - Adjustable - Screw-In Ball Joint - Steel - Black Paint - Chevy Fullsize Car 1955-57 (Pair) 3419WH Includes precision-ground crown radius andUse this patented design with the most adjustability and best clearance of any arm on the market to modernize the front suspension on your classic Chevy. SPC uses a 1 2" extended ball stud to improve camber curve, now adjust in some caster and a bit of camber and enjoy the drive. The fully rebuildable and greasable ball joints can also be customized for you ride with available OE length and 1 4" extended Studs. Sold as pairs. US Patent No.