UMI Performance SS203051 Coil Spring & Monotube Shock Lowering Handling Kit

The UMI Performance SS203051 is a complete coil spring and monotube shock lowering kit engineered to drop your vehicle approximately 2 inches while delivering a dramatic improvement in handling, control, and overall ride quality. Whether you're street cruising, Pro-Touring, corner carving, or light drag racing, this kit provides a high-performance foundation built entirely in the USA.

Key Features:

• 2-inch lowering for improved stance and handling dynamics
• 530 lb/in front spring rate and 130 lb/in linear rear rate for balanced, performance-oriented handling
• Premium chromium-silicon (CrSi) wire sourced from US suppliers for superior spring durability and consistency
• Nitrogen-charged monotube shock absorbers for precise, fade-free damping and excellent control
• Medium-firm compression valving provides a comfortable yet performance-oriented ride
• Ramped-up rebound valving works in concert with the UMI springs to control body roll during cornering and maintain a high-performance ride feel
• Race-proven shock construction built for long-term durability under demanding conditions
• Complete kit — everything needed is included
• Made in the USA

Important Note for Big Block Engine Vehicles: Vehicles equipped with a full-weight big block engine may experience an additional 1/4" of front end drop beyond the standard 2-inch lowering.

The UMI Performance SS203051 kit pairs race-quality lowering springs with purpose-matched monotube shocks, ensuring the compression and rebound characteristics work together as a tuned system — not as mismatched components. The result is a cohesive handling upgrade that transforms street and performance driving without sacrificing everyday drivability.