UMI Performance 1964-1966 Select GM A-Body Factory Height Front Springs, 530 lb/in (4049F)

Fits select 1964-1966 Buick Skylark/Special, Chevrolet Chevelle/El Camino, Oldsmobile 442/Cutlass/F85, and Pontiac GTO/LeMans.

Upgrade your classic GM A-Body with UMI Performance factory-height front springs, engineered to modernize handling while preserving the iconic muscle car stance. These springs eliminate the vague, "floating" sensation common with original equipment by increasing stiffness and reducing body roll. The linear 530 lb/in rate ensures predictable, consistent suspension response, making them a preferred choice for Pro-Touring builds, autocross competition, and high-performance street cruising.

Each spring is CNC cold-wound from premium 5160 Chromium Silicon (CrSi) wire for high fatigue resistance and long-term durability. These are designed to sit level with Small Block Chevy (SBC), Pontiac 400, LS-swap, or aluminum-head/intake Big Block Chevy (BBC) configurations. For full-weight iron Big Block applications, these springs typically provide a subtle 1/4-inch nose-down rake. Finished in a durable black powder coat for maximum corrosion resistance.

• Spring Rate: 530 lb/in Linear
• Material: 5160 CrSi premium wire
• Finish: Black Powder Coat
• Ride Height: Factory Standard (based on SBC/LS weight)
• Manufacturing: Made in the USA
• Part Number: 4049F