Spring 1-7/8in C/O 10in Tall

The QA1 Spring 1-7/8in Coil-Over 10in Tall (part number 10S250) is a precision coil-over suspension spring engineered for high-performance automotive applications where precise ride height control and consistent spring rates are critical. This 250 lb/in spring rate coil-over spring delivers the predictable load characteristics required for track use, drag racing, road course competition, and street performance builds where suspension tuning demands repeatability and reliability.

The 1.875-inch inner diameter and 10-inch free length allow integration with most coil-over shock absorber designs, providing a compact package without sacrificing travel or adjustability. At 250 pounds per inch, this spring rate sits in the moderate-to-firm range suitable for street-performance and weekend competition platforms—stiff enough to minimize body roll and maintain consistent geometry through cornering, yet manageable for daily driving comfort on properly valved dampers. The steel construction with silver powder coat finish resists corrosion while maintaining aesthetic appeal, and the uniform spring rate ensures predictable handling characteristics across the suspension's operating range.

This spring suits builders, performance shops, and enthusiasts developing suspension systems for street machines, track cars, and competition vehicles where OEM springs lack the stiffness or adjustability needed. Proper application requires matching the spring rate to vehicle weight, driving style, and shock valving. Coil-over springs are sold individually; most applications require a matched pair or full set.

QA1 specializes in high-performance suspension components for street and race applications, with a strong reputation for quality and consistency. This spring is engineered to OEM coil-over specifications and maintains predictable performance across thermal cycles and extended use—essential for builders and teams where suspension reliability directly impacts handling and safety.