Overview

UMI Performance Rear 4-Link Suspension Kits

UMI Performance rear 4-link suspension kits are designed to replace the outdated leaf spring setup on your C10 truck with a race-inspired 4-link rear suspension system featuring unequal length trailing arms, an adjustable panhard bar, and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, these UMI 4-link suspension kits are tuned for maximum traction, precision alignment, and stellar ride comfort. Whether it's weekend cruising, autocross, or high-power builds, the UMI Performance 4-link delivers proven results.

Key features and benefits include:

* Race-inspired, unequal length trailing arms—provides superior axle control, reduced wheel hop, and enhanced traction compared to factory leaf springs, optimizing your C10's suspension geometry for both street and performance driving
* Fully adjustable panhard bar lets you easily center your rear axle after lowering or height changes by fine-tuning bar length (adjust mounting height at the frame or axle to dial in your rear roll center—precisely tune handling and body roll to your preferences)
* Instant center adjustable chassis mounts allow you to quickly change suspension pickup points to tune anti-squat, instant center location, and weight transfer under acceleration, giving you the edge for drag strip launches and corner exit grip
* Heavy-duty crossmember included—designed for strength and rigidity, maintaining chassis integrity under aggressive loads, and tying the entire rear suspension assembly together—you can add optional PN 6426 rear frame brace (sold separately) for additional frame strengthening)
*Available fuel tank relocation—integrated crossmember mounting points for optional PN 6428 fuel tank relocation kit
* Straightforward installation with basic fabrication such as drilling out old spring perch rivets and trimming for the included notch kit—no guesswork or excessive modifications required—simply bolt-on after completing the frame modifications.
* Aftermarket ready—the included lower rear-end panhard bar mounting bracket is specifically designed to clear most aftermarket rears with additional center section bracing
* Race proven, and trusted on race tracks and by performance builders across the USA, every UMI 4-link kit is engineered, manufactured, and tested right here in America from the best materials

Double adjustable Viking Coilovers (Optional add-on):

* The Viking Performance (C209-W) shock is a double adjustable coil-over shock designed for street and competition use, featuring independent compression and rebound tuning for optimized performance and ride quality—perfect for performance C10 suspension upgrades seeking both drivability and control
* Coilover key features—19 distinct adjustment positions for each knob means users can dial in precise ride quality and performance
* Premium bearing mounts with stainless steel races enhance durability and misalignment capabilities, outperforming basic nylon/poly bushings
* 12DP225 225 lbs./in. springs are premium coil-over spring designed for high-performance suspension setups, offering both strength and reduced weight for demanding street or competition builds (you can contact sales dept. for additional customized spring options based on your application)

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