UMI Performance

UMI Performance 67-72 GM A-Body 1in Lowering Spring SetThis Part Fits:YearMakeModelSubmodel1967BuickGran...

UMI Performance 67-72 GM A-Body Factory Height Springs RearThis Part...

2” Lowering with standard SBC, Pontiac 400 and aluminum head/intake Big Block Chevy as well as LS power.This Part Fits:YearMakeModelSubmodel1967BuickGran...

This kit includes (1) set of our tubular single adjustable lower control arms and (1) set of our on-car adjustable upper control arms, "Ultimate Arms". Both items are direct replacements of the OEM...

Installation: Item installs in approximately 1-2 hours using basic hand tools.This Part...

Trailing arm mount braces are designed to reinforce the upper and lower front control arm mounts on your classic A-Body. The more power your ride makes the better chance of bending or breaking the...

Trailing arm mount braces are designed to reinforce the upper and lower front control arm mounts on your classic A-Body. The more power your ride makes the better chance of bending or breaking the...

UMI Performance 68-72 GM A-Body LSX Motor MountsThis Part...

UMI Performance 68-72 GM A-Body LSX Motor MountsThis Part...

UMI Performance 68-72 GM A-Body Rear Shock Tower Brace Bolt InThis Part Fits:YearMakeModelSubmodel1970-1972BuickGSBase1968-1969BuickGS 350Base1968-1969BuickGS 400Base1970-1972BuickGS...

UMI Performance 68-72 GM A-Body Rear Shock Tower Brace Bolt InThis Part Fits:YearMakeModelSubmodel1970-1972BuickGSBase1968-1969BuickGS 350Base1968-1969BuickGS 400Base1970-1972BuickGS...

Installation: Easy 1-hour bolt-on installation requires no drilling, uses OEM hardware.This Part Fits:YearMakeModelSubmodel1970-1972BuickGSBase1968-1969BuickGS 350Base1968-1969BuickGS...

Installation: Easy 1-hour bolt-on installation requires no drilling, uses OEM hardware.This Part Fits:YearMakeModelSubmodel1970-1972BuickGSBase1968-1969BuickGS 350Base1968-1969BuickGS...

Rear control arms are one of the most important suspension modifications that can be done to your GM vehicle. Stock control arms are on the borderline of junk, bushing deflection and rusting weak...

40+ years of moisture and abuse can leave your frame in bad shape, and unable to properly locate the body mounts. Our 8 piece kit is designed to weld-in and provide a sturdy surface and a properly...

UMI Performance 70-81 GM F-Body Lowering Spring Front 2in LoweringThis Part...

UMI Performance 70-81 GM F-Body Rear Leaf Spring Set 2in LoweringThis Part...

UMI Performance 70-81 Polyurethane Leaf Spring Shackle KitThis Part...

UMI Performance 73-87 GM C10 Front Lowering Springs 2in dropThis Part Fits:YearMakeModelSubmodel1978-1980ChevroletC10Big...

UMI Performance 73-87 GM C10 Shock Relocation Kit RearThis Part Fits:YearMakeModelSubmodel1978-1980ChevroletC10Big...

Don't reuse your old rusty bolts when installing aftermarket control arms when you can replace them with new ones. Our kit includes all new hardware for installing either upper or lower rear control...

UMI Performance 78-88 G-Body Lowering Spring Kit 2in Lowering

Note: Upper a-arm P/N 3056-3 includes 1” taller ball joints and is designed to work with factory spindles. In most cases shims are not needed. Shims may still be required on some applications.

Don't reuse your old rusty bolts when installing aftermarket control arms when you can replace them with new one. Our kit includes all new hardware for installing both upper and lower rear control...

UMI Performance 1.250" (32mm) solid front sway bar is designed to reduce body roll, understeer and increase cornering capabilities resulting in a more balanced suspension. This front sway bar is...

UMI Performance 1.250" (32mm) solid front sway bar is designed to reduce body roll, understeer and increase cornering capabilities resulting in a more balanced suspension. This front sway bar is...

Fitment Note: When installing on a after-market Ford 9" the drain plug guard may create a fitment issue.

Fitment Note: When installing on a after-market Ford 9" the drain plug guard may create a fitment issue.

This kit includes (1) set of our tubular single adjustable lower control arms and (1) set of our on-car adjustable upper control arms, "Ultimate Arms". Both items are direct replacements of the...

This kit includes (1) set of our tubular single adjustable lower control arms and (1) set of our on-car adjustable upper control arms, "Ultimate Arms". Both items are direct replacements of the...

Trailing arm mount braces are designed to reinforce the rear upper and lower front control arm mounts on your 1978-1988 G-Body vehicle. The more power your ride makes the better chance of bending or...

Trailing arm mount braces are designed to reinforce the rear upper and lower front control arm mounts on your 1978-1988 G-Body vehicle. The more power your ride makes the better chance of bending or...

Complete Kit Includes: (1) Set of Double Adjustable Lower Control Arms with Spherical Rod Ends (Item #3027) (1) Ser of Double Adjustable Upper Control Arms "Ultimate Arms" (Item #3017)This Part...

UMI Performance 78-88 GM G-Body Front 1in 70-81 F-Body 2-1/2in Lowering Spring

Note: Not currently approved for Grand National platform with intercooler. Occasional grinding may be required due to GM G-Body product tolerances. UMI used five test cars for fitment in a variety...

UMI Performance 78-88 GM G-Body Lowering Spring Front 2in Lowering

100% designed, manufactured and raced out of Philipsburg, PA-USA.This Part Fits:YearMakeModelSubmodel1978-1987BuickRegalBase1988BuickRegalCustom1982-1983BuickRegalEstate...

UMI Performance 78-88 GM G-Body Rear Shock Tower Brace Bolt In

UMI Performance 78-88 GM G-Body Rear Shock Tower Brace Bolt In

UMI Performance 78-88 GM G-Body SBC Poly Engine Mount Kit