Upgrade your classic truck’s suspension and handling with the UMI Performance C10 4-Link Suspension Kit—the premier solution for 1973-1987 Chevy and GMC squarebody owners looking to...

Installation Instructions UMI Performance C10 Rear Frame Brace – Squarebody Rear CrossmemberThe UMI Performance Rear Frame Brace (P/N 6426) is the ultimate way to strengthen the back end of...

Installation Instructions Safer, stronger, and cleaner — the right way to upgrade your squarebody fuel system. The UMI Performance C10 Fuel Tank Relocation Kit moves the fuel tank out from...

 Installation Instructions Install your UMI 6428 Fuel Tank Relocation Kit with ease—even if you don’t have the UMI 4-link! The UMI Performance 6429 Bracket Add-On makes our...

Sway bar end links feature poly bushings on the sway bar end and a high misalignment rod end to attach to the a-arm. Used to attach stock style sway bar to UMI double shear lower a-arm mounts...

Heavy duty sway bar bracket used to mount sway bar on trucks not normally equipped with a front bar. For stock ride height trucks as well as those using drop spindles. •  Use for trucks...

Heavy duty sway bar bracket used to mount sway bar on trucks not normally equipped with a front bar. For stock ride height trucks as well as those using drop spindles. •  Use for stock...

UMI’s Pro-Tour style rear sway bar dramatically improves the handling of the C10 squarebody. This bar features 3-position adjustability to fine tune handling balance. When paired with our 6440...

Heavy duty front and rear sway bar kit dramatically reduces body roll and improves cornering performance. Front tubular bar balances increased stiffness while saving weight. Solid 1″ rear...

Heavy duty tubular sway bar reduces body roll and improves cornering capability. Tubular construction balances heavy load and sway control with lightweight performance. The bar is built from US steel...

Heavy duty 2.5″ drop spindles feature UMI satin black powder coat for ultimate durability. Spindles use GM C10 factory bearings and accept factory GM brake kits. •  2.5″ drop...

UMI’s Race Proven #cornermax a-arm and mount kit brings race car handling to your truck. Double shear coilover-only mounts hold all popular coilover assemblies. •  Direct bolt-in...