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CSP2026

UMI Performance 6400-1 - 73-87 GM C10 Lowering Kit (4.5in Front/6in Rear) with UMI shocks

UMI Performance  |  SKU: GPHP-6400-1
Sale price $1,06099 Regular price $1,16709


AVAILABILITY: This Item Is Out Of Stock.


PLEASE NOTE: Pictures may be representative of style, rather than the actual product. Read the description for more details.

Description

UMI Performance 6400-1 - 73-87 GM C10 Lowering Kit (4.5in Front/6in Rear) with UMI shocks

Lowering Kit - 4.5 in Front / 6 in Rear - Coil Springs / Hardware / Spindles - GM Fullsize Truck 1973-87 - Kit

UMI’s 6400-1 kit drops C10s 4.5”/6” for improved stance and handling. Includes drop spindles, springs, Bilstein B6 shocks, and rear flip kit—no notch needed. Fits ’73–80; ’81–87 require 1.25” rotor upgrade.

Designed specifically for the 1973-1980 GM C10 trucks, these spindles fit perfectly with 1-1/4" brake rotors. If you own a 1981-1987 model, you might find that it comes with 1" brake rotors. In such cases, you'll need to upgrade to the 1-1/4" rotors used on the earlier models to ensure compatibility and optimal performance.

  • 4.5” front / 6” rear drop for a low, aggressive stance
  • Improves overall handling and ride quality
  • Includes 2.5” drop spindles, 2” lowering springs, and rear flip kit
  • Satin black powder-coated components for durability and clean appearance
  • No cutting required lowering solution
  • Upgradeable with UMI shocks and sway bars for enhanced performance
Adjustable: Yes
Adjustable: Double
Bushing Color: Red
Bushing Material: Polyurethane
Bushings Included: Yes
Color: Black
Finish: Red Powdercoated
Finish: Black Powdercoated
Grade Type: Performance
Material: Steel
Mounting Hardware Included: Yes
Mounting Method: Bolt On
Sway Bar Color: Red Powdercoated

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