UMI Performance 64-66 GM A-Body Factory Height Springs Rear Drivetrain>Crossmembers All BBK mass air meters

All BBK mass air meters are CNC Machined large bore aluminum housing's with a custom BBK calibrated electronic sensor placed on top to accurately measure air flow for accurate air fuel ratio's

For high-powered applications

BMR's suspension designed the TR007 to work well in street performance

They feature the same great style and construction

UMI Performance 64-66 GM A-Body Factory Height Springs Rear Drivetrain>Crossmembers All BBK mass air metersA spring is a spring right? Wrong! When UMI chose to manufacture our own line of springs we went all out. Designed in conjunction with a leading Sprint Cup chassis engineer, these springs are the best in the business. UMIs springs are designed to add modern handling and a crisp ride while maintaining the factory muscle car appearance. The rear springs are wound from 9254 CrSi premium wire and feature a linear 130 lb in rate. The linear rate provides