UMI 6425 4-link kit boosts traction, handling & comfort for C10 trucksThe UMI 6425 kit replaces the outdated leaf spring setup on your C10 with a race inspired 4 link rear suspension system featuring unequal length trailing arms, an adjustable panhard bar, and high performance Viking coilovers (add on). Engineered for serious street and pro touring enthusiasts, this suspension kit is tuned for maximum traction, precision alignment, and stellar ride comfort. Whether its weekend cruising, autocross, or high power builds,

2”-3” Lowering

2608 - 1970-1974 GM F-Body LS Swap engine mount

1970-1981 F-Body 2-1/2" Lowering Spring

and nitrogen charge prevents fade for consistent

Tech Tip: P/N 2602 includes ½” lower a-arm bolts while P/N 2603 uses 14mm

Bilstein B6 Performance dampers are a performance upgrade to OE dampers designed to be paired with the OE factory spring

Built from the ground up with cutting-edge compound chemistry and race-proven engineering

266602 - 1970-1981 GM F-Body Front End Kit

Designed for large-diameter 3

or cornering with simple knob adjustments—no tools required

Viscosity Index 176

80W and motor oil viscosities of SAE 30