Your Cart

No products in the cart.

Shop by Vehicle Cart Checkout Specials About Returns Contact
Everyday low prices! Freight starting at $200

1978-1988 GM G-Body Handling Kit, 1S Lowering- Stage 3.5

SKU: UMIGBF035-1-B

$3,989.95

In Stock

Shipping:

Ground - Oversized

IMPORTANT: Suspension kits require assembly and can take up to 5-6 weeks to ship, please email us at sales@restorationperformance.com for availability.

Add to Buildlist
Add to Buildlist

Vehicle Fitment:

  • 1985 Oldsmobile Cutlass
  • 1986 Oldsmobile Cutlass
  • 1987 Oldsmobile Cutlass
  • 1988 Oldsmobile Cutlass
  • 1985 Oldsmobile Cutlass Salon

1978-1988 GM G-Body Handling Kit, 1S Lowering- Stage 3.5

  • 1978-1988 GM G-Body Handling Kit, 1? Lowering- Stage 3.5
  • 1-1/4? front sway bar for flat cornering, CNC bent from 4140.
  • 1? diameter rear Pro-Tour sway bar offers tune-able rear roll resistance and less binding for street, corner carving or light drag and is balanced well with our 1-1/4? front bar and spring rates.
  • 1? or 2? lowering springs, linear spring rates (600 lb/in front, 130 lb/in rear).
  • Adjustable rear upper control arms with Roto-Joints.
  • Entire kit is designed and built in the USA.
  • Heavy duty 1-1/4? front sway bar with new bushings & endlinks.
  • Heavy duty frame braces with new high grade hardware.
  • Increased spindle height by 1/2? via tall upper ball joints for improved camber gain and a better tire contact patch. Works nicely in conjunction with lowering springs.
  • Key Features:
  • Lower a-arms feature UMI-built Delrin bushings, premimun ball joints and bump stops.
  • New Grade 8 proper mounting hardware.
  • Note: Chassis mounted rear sway bar included fits factory rear end axle tubes measuring 2.750?. If your vehicle is using an aftermarket rear end with larger axle tubes please contact us for 3.000? or 3.250? u-bolts.
  • Rear lower control arms featuring Roto-Joint & Polyurethane combination.
  • Rear trailing arms feature Poly and Roto-Joints as well as adjustable uppers for setting pinion angle and rear lateral location.
  • Replacement polyurethane rear end housing bushings.
  • Roto-Joints allow smooth articulation for improved handling and less bind.
  • Spring Heights: Springs are intended for small block engine. Lightweight LS engines may require trimming and an additional 1/4 front end drop may occur with a full weight big block. When choosing desired height, 1? lowering tends to sit just slightly lower than factory while 2? lowering offers a mild well rounded lowered look still allowing proper suspension travel.
  • Tubular & adjustable 1? pro-touring rear sway bar, chassis mounted design.
  • Tubular front lower a-arms with Delrin bushings.
  • Tubular upper front a-arms with Delrin bushings & ?? taller ball joints.
  • UMI rebound adjustable monotube shocks.
  • UMI shocks feature monotube construction and rebound damping adjustment. Rebound adjustment tuning improves handling and responsiveness.
  • UMI springs feature ultra premium CrSi material with linear rates front and rear for consistent handling. (530 lb/in front, 130 lb/in rear).
  • UMI?s Stage 3.5 Handling Kit Includes:
  • UMI?s Stage 3.5 kit is designed to transform your GM G-Body from a grandma cruiser to a capable corner carver with the twist of the wrist. UMI?s lowering springs form the handling foundation and are controlled by UMI?s premium rebound adjustable shocks. Our ultra-premium springs feature carefully tuned rates and high quality construction to eliminate the floating feeling and will tie your G-Body directly to the road. The UMI monotube shocks rebound adjustment allows you to fine tune your ride whether you?re doing back road heroics or shaving that last tenth of a second between the cones. UMI a-arms feature tubular construction, Delrin bushings for precise steering and caster corrected uppers. The ?? taller upper ball joints work with the lowering springs to tune up the poor factory camber curve. Out back the UMI trailing arms feature Roto-Joints for smooth articulation combined with poly bushings for a smooth ride. Adjustable uppers allow for pinion angle tuning while the axle mounted pro-tour bar performs on the street, during cornering and even the occasional dragstrip blast. The entire package is designed and manufactured by UMI in Philipsburg, PA ? USA of US materials and we?re proud to drive on and race what we build.
  • Upper a-arms add caster for improved steering feel and straight line stability.
UMI Performance was founded in 2002 as a father/son business developing performance parts for GM and Ford products. They quickly began to focus on suspension upgrades for both older and late model muscle cars, and have become a leader in replacement and high-performance suspension components, from individual parts to entire kits.

Fitment:

  • 1985 Oldsmobile Cutlass
  • 1986 Oldsmobile Cutlass
  • 1987 Oldsmobile Cutlass
  • 1988 Oldsmobile Cutlass
  • 1985 Oldsmobile Cutlass Salon
  • 1986 Oldsmobile Cutlass Salon
  • 1987 Oldsmobile Cutlass Salon
  • 1982 Pontiac Bonneville
  • 1983 Pontiac Bonneville
  • 1984 Pontiac Bonneville
  • 1985 Pontiac Bonneville
  • 1986 Pontiac Bonneville
  • 1982 Oldsmobile Cutlass Ciera
  • 1983 Oldsmobile Cutlass Ciera
  • 1988 Oldsmobile Cutlass Ciera
  • 1985 Oldsmobile Cutlass Ciera
  • 1984 Oldsmobile Cutlass Ciera
  • 1986 Oldsmobile Cutlass Ciera
  • 1987 Oldsmobile Cutlass Ciera
  • 1980 Oldsmobile Cutlass Cruiser
  • 1981 Oldsmobile Cutlass Cruiser
  • 1982 Oldsmobile Cutlass Cruiser
  • 1983 Oldsmobile Cutlass Cruiser
  • 1980 Oldsmobile Cutlass
  • 1981 Oldsmobile Cutlass
  • 1978 Oldsmobile Cutlass
  • 1979 Oldsmobile Cutlass
  • 1978 Oldsmobile Cutlass Calais
  • 1979 Oldsmobile Cutlass Calais
  • 1980 Oldsmobile Cutlass Calais
  • 1981 Oldsmobile Cutlass Calais
  • 1982 Oldsmobile Cutlass Calais
  • 1983 Oldsmobile Cutlass Calais
  • 1984 Oldsmobile Cutlass Calais
  • 1978 Oldsmobile Cutlass Salon
  • 1979 Oldsmobile Cutlass Salon
  • 1980 Oldsmobile Cutlass Salon
  • 1987 Oldsmobile Cutlass Supreme
  • 1978 Oldsmobile Cutlass Supreme
  • 1979 Oldsmobile Cutlass Supreme
  • 1980 Oldsmobile Cutlass Supreme
  • 1981 Oldsmobile Cutlass Supreme
  • 1982 Oldsmobile Cutlass Supreme
  • 1983 Oldsmobile Cutlass Supreme
  • 1984 Oldsmobile Cutlass Supreme
  • 1985 Oldsmobile Cutlass Supreme
  • 1986 Oldsmobile Cutlass Supreme
  • 1988 Oldsmobile Cutlass Supreme
  • 1978 Chevrolet El Camino
  • 1979 Chevrolet El Camino
  • 1980 Chevrolet El Camino
  • 1981 Chevrolet El Camino
  • 1982 Chevrolet El Camino
  • 1983 Chevrolet El Camino
  • 1984 Chevrolet El Camino
  • 1985 Chevrolet El Camino
  • 1986 Chevrolet El Camino
  • 1987 Chevrolet El Camino
  • 1978 Chevrolet Malibu
  • 1979 Chevrolet Malibu
  • 1980 Chevrolet Malibu
  • 1981 Chevrolet Malibu
  • 1983 Chevrolet Malibu
  • 1982 Chevrolet Malibu
  • 1979 Chevrolet Monte Carlo
  • 1981 Chevrolet Monte Carlo
  • 1982 Chevrolet Monte Carlo
  • 1983 Chevrolet Monte Carlo
  • 1984 Chevrolet Monte Carlo
  • 1985 Chevrolet Monte Carlo
  • 1986 Chevrolet Monte Carlo
  • 1987 Chevrolet Monte Carlo
  • 1988 Chevrolet Monte Carlo
  • 1978 Chevrolet Monte Carlo
  • 1980 Chevrolet Monte Carlo