UMI Performance 1970-1981 GM F-Body Handling Kit, 2 Lowering, Stage 3.5

Part Number: UMIFBF035-R

UMI Performance 1970-1981 GM F-Body Handling Kit, 2 Lowering, Stage 3.5

Part Number: UMIFBF035-R

$3,748.95

In Stock

( Inventory updated: 06/06/2026 )

Estimated ship date: 2-3 business days

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1970-1981 GM F-Body Handling Kit, 2 Lowering, Stage 3.5

  • 1970-1981 GM F-Body Handling Kit, 2 Lowering, Stage 3.5
  • 100% Made In USA
  • 2620 2? drop leaf springs (175 lb/in) come loaded with front bushings. Spring rate is high performance yet daily driver worthy.
  • 2626 Laser cut shackle kit with high performance Delrin bushings feature premium performance and reduced deflection.
  • 2627 Heavy duty U-bolts, front bolt and polyurethane axle pads improve performance and replace rusty, worn out components.
  • 2652 Delrin bushing lower a-arm features excellent steering precision and increased caster for stability.
  • 2656-1 Adjustable rod ends and CrMo cross shaft upper a-arm features additional caster for stability as well as ?? taller upper ball joint to improve cornering. Minimizes need for shims.
  • 4067 1-5/16 extra heavy duty, ultra performance front sway bar resists body roll and includes bushings and endlinks.
  • 7917-101 Thrust bearings to reduce friction in hybrid coilover
  • 7995-101 Spanner wrench for easy height adjustment
  • A225-650R Viking hybrid coilover kit features 650 lb/in spring rate suitable for corner carving, adjustable ride height, bearing style t-bar for durability, and adjustable compression and reobund damping (19 clicks each).
  • B219 Viking rear smooth body shocks feature 19 independent clicks of both compression and rebound adjustment
  • Includes:
  • Optional hardware kit: Upper and lower a-arm premium quality installation hardware kit. P/N 2602 for 1970-1974 or 2603 for 1975-1981.
  • UMI?s Stage 3.5 handling kit features everything you need to transform your 2nd Gen F-Body from a land yacht into a modern handling, fun to drive corner carver. Viking front hybrid coilovers control attitude and altitude and feature a cornering oriented spring rate as well as 19 damping settings in both compression and rebound. Caster corrected upper and lower a-arms, combined with a tall ball joint in the upper arm, improves caster for stability as well as camber gain for cornering. The 2nd Gen platform responds nicely to the heavy duty 1-5/16 front sway bar which flattens cornering and makes the car much more fun to drive. The UMI designed leafs are delivered with the front bushing installed and the kit includes laser cut shackles with Delrin bushings for a crisp, high performance ride. Also included are high quality polyurethane isolator pads as well as heavy duty Made In USA U-bolts and hardware. The rear suspension damping is handled by Viking double adjustable smooth body shocks with 19 compression and 19 rebound settings and pair nicely with the fronts. This kit is suitable for daily driving as well as corner carving and is 100% Made In USA of USA materials.

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UMI Performance

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.

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