Speedmaster 350 lbs/in Spring Rate 12" Coil Over Shock Assemblies Adjustable Pair PCE494.1006

The Speedmaster PCE494.1006 is a pair of adjustable coil over shock assemblies featuring a 350 lbs/in spring rate and 12" length, engineered for high-performance suspension tuning and customization. These units allow fine-tuning of ride height and spring preload to match specific vehicle setups and driving conditions, making them ideal for street performance, autocross, and track applications where suspension geometry and damping control are critical.

Each assembly combines a precision coil spring with integrated shock damping in a compact, adjustable design. The adjustable nature of these coil overs enables drivers to dial in the exact suspension characteristics needed for their vehicle weight, driving style, and road conditions. Built as a matched pair, they ensure consistent handling balance and are designed to work together as a complete suspension system upgrade or replacement for vehicles requiring performance-grade shock and spring integration.

Key Features & Benefits

• 350 lbs/in Spring Rate: Consistent spring force rated at 350 lbs/in for predictable suspension response and tuning capability.
• 12" Coil Over Length: Compact 12" design integrates the coil spring and shock damper in a single adjustable unit.
• Fully Adjustable: Height and preload adjustment allows customization of ride characteristics to match vehicle setup and driver preference.
• Matched Pair: Two units supplied together to ensure balanced left and right suspension geometry and damping performance.

Specifications

Ideal Applications

• Street performance and high-performance vehicle suspension tuning
• Autocross and amateur track day competition vehicles
• Custom suspension systems for vehicles requiring precision damping and spring rate control
• Off-road and lifted vehicle suspension upgrades