Crossmembers

UMI’s Stage 2 kit provides a solid foundation for your street car used for drag strip duty. It features the best of both worlds combining weight reduction and strength with performance and comfort. Our dual tube k-member is known as the strongest in...

UMI’s Stage 2 kit provides a solid foundation for your street car used for drag strip duty. It features the best of both worlds combining weight reduction and strength with performance and comfort. Our dual tube k-member is known as the strongest in...

UMI’s Stage 1 kit is the perfect starting point for removing front end weight and improving the weight transfer in your 4th Gen. Our dual tube k-member is known as the strongest in its class and can withstand wheel stand landings and street abuse...

UMI’s Stage 1 kit is the perfect starting point for removing front end weight and improving the weight transfer in your 4th Gen. Our dual tube k-member is known as the strongest in its class and can withstand wheel stand landings and street abuse...

Transform your GM G-body with UMI's state-of-the-art modular crossmember system, designed to deliver precision, performance, and versatility. Engineered with a laser-cut tab and slot design, this innovative solution offers multiple mounting locations,...

Introducing UMI's Cutting-Edge Modular Crossmember System: The Ultimate Transmission Mounting Solution for Your 1978-1988 GM G-Body Transform your GM G-body with UMI's state-of-the-art modular crossmember system, designed to deliver precision,...

Crossmember to swap T56 and T56 Magnum transmissions in 1970-1974 GM F-Body cars. Laser cut tab and slot construction combines high strength and light weight into one package.This Part...

Crossmember to swap T56 and T56 Magnum transmissions in 1970-1974 GM F-Body cars. Laser cut tab and slot construction combines high strength and light weight into one package.This Part...

UMI’s LS swap kit features engine mounts and a T56 crossmember used to place a new drivetrain in 1970-1974 GM F-Body cars. UMI’s LS engine mounts locate the LSx engine properly on the 1970-1974 crossmember. The mounts feature precision laser cut 3/16″...

UMI’s LS swap kit features engine mounts and a T56 crossmember used to place a new drivetrain in 1970-1974 GM F-Body cars. UMI’s LS engine mounts locate the LSx engine properly on the 1970-1974 crossmember. The mounts feature precision laser cut 3/16″...

UMI Performance 82-92 GM F-Body LSX Engine Tubular K-Member w/ Weight Jack Kit (850lb.) - RedThis Part...

UMI 2411 integrated front weight jack mounts are a bolt-in solution that makes it easy to set ride height and corner balance your 3rd Gen. They work together with the UMI k-member to make an easy to install weight jack system. UMI 2411’s feature strong...