1978 - 1988 Monte Carlo G-Body UMI Suspension Kit GBF004 Viking A224-450 for Sale


When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

Price: $3699.99

ebay template

To ensure that you\'re ordering the correct part, or for questions, feel free to contact us.

We\'re here to help you Mon-Fri 8am-4pm, Pacific Time
California Sales Tax will apply on all orders shipping to California.

To make sure you receive your package, all items $500 and over are sent signature required

1978-1988 GM G-Body Handling suspension Package- Stage 4

Front Spring Rate Options:
450lb- Small block cruise
550lb- Small block handling, all big blocks


*Rear Spring available in 1\" or 2\" Drop

*Available in Red or Black Powdercoat

  • Applications:
  • 1978 - 1988 Chevrolet Monte Carlo, Malibu, El Camino
  • 1978 - 1988 Buick Regal, Grand National
  • 1978 - 1988 Pontiac Grand Prix, LeMans
  • 1978 - 1988 Oldsmobile Cutlass


  • Key Features:
  • CNC inreased spindle height by 1\" via tall upper and lower ball joints for improved camber gain and a better contact patch.
  • Upper a-arms add caster for improved steering feel and straight line stability.
  • Lower a-arms feature UMI-built Delrin bushings and accept standard springs or coilovers.
  • 1.250\" front sway bar for flat cornering, CNC bent from 4140.
  • Double adjustable Viking shocks are hand assembled in Minnesota USA and feature 361 possible valving combinations. Simply click and tune.
  • Hybrid coilover springs are available in various rates depending on application and are Made In USA
  • Rear trailing arms feature Poly and Roto-Joints as well as adjustable uppers for setting pinion angle and rear lateral location.
  • Roto-Joints allow smooth articulation for improved handling and less bind.
  • Choice of 1\" or 2\" rear lowering springs combined with Viking double adjustable rear shocks works great on street, auto-x and even the drag strip.
  • 1\" diameter tubular Pro-Tour style rear sway barallows setting for street/handling or strip. Chassis mounted sway barallows 3 adjustments.
  • Rear sway bar is preload adjustable to function as a drag anti-roll bar. Simply turn the on-car adjuster and leave the line with no body twist and even traction.
  • Hardware included.
  • Manufactured in Philipsburg, PA

  • Stage 4 Kit Includes:
  • Tubular lower front a-arms with Delrin bushings & ½\" taller ball joints, Part #3032-1
  • Tubular upper front a-arms with Delrin bushings & ½\" taller ball joints, Part #3033-2
  • 1-1/4\" Front sway bar with bushings and end links, Part #3035
  • \" Tubular pro-touring rear sway bar, 3-way adjustable, Part #3044
  • Set of (4) double adjustable VIKING PERFORMANCE shocks
  • Front Viking Performance coilovers with choice of spring rate
  • Thrust bearing and spanner wrench for quick and easy height adjustments
  • Rear lowering springs, choice of 1\" or 2\" rear drop
  • Tubular rear lower control arms with Roto-Joint, Part #3038
  • Adjustable rear upper control arms with Roto-Joints, Part #3037
  • Tubular frame braces, Part #3028
  • Replacement rear end housing bushings, Part #3000
  • All new Grade 10.9 hardware with nylock nuts to install kit


About Roto-Joint Technology

UMI\'s Roto-Joint, short for Rotational Joint,allows 28 degrees of total rotation and unrestricted movement throughout the vehicles suspension. The Roto-Joint is designed to work like a spherical rod end while maintaining streetable qualities of a softer bushing. The Roto-Joint is designed to articulate and prevent suspension bind, and since the installed delrin race does not deflect like softer bushings, there is an improvement in traction and a significant reduction in wheel hop. The construction of the Roto-Joint features a 4140 chrome moly, hard chrome plated spherical ball which rotates in a delrin race. The 4140 chrome moly material and hard chrome plating are designed for extensive wear resistance against hard driving and accumulated miles. The spherical ball rotates in the CNC machined delrin bushing, which is contoured for the spherical ball to allow unrestricted movement as the ball rotates. Delrin is the bushing material of choice due to its high resistance against wear, great tensile strength, and ability to maintain its physical properties. The housing of the Roto-Joint features 4140 chrome moly threads, and a CNC machined bushing holder TIG welded together for the utmost in strength and durability. The UMI Roto-Joint is adjustable and 100% rebuildable. This means as the delrin race wears the adjuster ring can be tightened using the optional spanner wrench to apply tension to the ball. If the delrin race would ever wear completely it can be replaced easily.


  • Features:
  • 100% Rebuildable Design
  • educes Suspension Bind
  • elrin race absorbs shock
  • Greaseable unit increases bushing life
  • Tig welded construction
  • Chrome moly spherical ball
  • 8 Degrees of total unrestriced movement
  • uilt exclusively by UMI Performance
  • Made in the USA!

Warranty: UMI Performance offers a 2 Year replacement Warranty from the original purchase date to the original purchaser of the parts.

Shipping Price listed is for the Continental US 48 States. Alaska, Hawaii, and International Shipping are more. If your shipping price does not list in eBay’s shipping area please e-mail us for a quote. We ship with UPS and USPS for International Shipments.

Thank you for shopping at Matt’s Classic Bowties


Sell Smarter with Kyozou.
Inventory and Ecommerce Management


Parts Search:


Follow