UMI Performance ABF415-67-2-B Stage 1.5 Handling Kit 2-Inch Lowering Black

The UMI Performance ABF415-67-2-B is a comprehensive Stage 1.5 Handling Package engineered to dramatically transform the suspension performance of 1967 GM A-Body muscle cars. Building on the proven Stage 1 foundation, this kit adds race-worthy rebound adjustable monotube shocks and an improved camber curve for a well-rounded balance of street comfort and serious performance capability. Every component in this kit is proudly Made in the USA.

Key Features:

• Rebound Adjustable Monotube Shocks: Race-proven monotube design features a large-diameter piston and nitrogen charge with fixed medium compression and adjustable medium/high rebound. The external 20-click adjustment knob requires no tools — simply turn to dial in your preferred damping from street cruising to autocross.
• Improved Camber Curve: Includes ½" taller-than-stock upper ball joints to optimize the camber curve for better tire contact patch and improved cornering stability. Compatible with factory and most aftermarket A-arms.
• High-Performance Lowering Springs: 530 lb/in linear rate front springs (wound from premium CrSi wire) and 130 lb/in linear rate rear springs deliver crisp, predictable handling while reducing the floating sensation common to stock A-body suspension. Engineered for 2" of lowering.
• Sway Bar Package: 1-1/4" CrMo front sway bar and 1" heat-treated rear sway bar work together to minimize body roll and maintain excellent chassis balance at the limit.
• Upgradeable Platform: Stage 1.5 is designed to be upgraded to Stage 2 or Stage 3 without duplicating any parts.
• Broad Performance Range: Suitable for corner carving, autocross, and road course use while remaining comfortable enough for everyday street driving.

Engine & Application Notes:

• Small block Chevrolet and Pontiac 400 engines tend to sit level with this kit.
• Lightweight LS engine swaps may require spring trimming to achieve proper ride height.
• Vehicles equipped with full-weight big block engines may experience an additional ¼" of front-end drop.

The UMI Performance Stage 1.5 kit is finished in black powder coat and manufactured entirely in Philipsburg, PA. Whether you're building a weekend autocross weapon or a refined daily driver, this kit delivers measurable handling gains right out of the box.