Rear Spring 5.5in ID 11in Tall Single Pigtail

The HYPERCO Rear Spring 5.5in ID 11in Tall Single Pigtail (MPN: 18SNP11-175) is a conventional coil spring engineered for rear suspension applications in high-performance vehicles. With a 175 lb/in spring rate, this spring delivers controlled load handling and consistent ride dynamics across a range of driving conditions. Built from steel with durable black paint, the single pigtail design provides straightforward installation while maintaining precision spring characteristics required for performance driving and off-road applications.

The 5.5-inch inner diameter and 11-inch height make this spring suitable for vehicles requiring a moderate spring rate without extreme compression or extension limits. The 175 lb/in rate sits in the mid-range of typical coil spring specifications, balancing ride comfort with responsive handling characteristics. The single pigtail configuration simplifies mounting and reduces points of failure compared to double-pigtail designs. Steel construction with black paint provides corrosion resistance suitable for various climates and driving environments, from street use to trail duty.

This HYPERCO spring is ideal for vehicle owners upgrading suspension geometry or replacing worn rear springs. It serves classic car restorers, off-road enthusiasts, and street performance builders seeking reliable OEM-compatible or upgrade-level rear suspension components. The specifications make it applicable to light-duty truck and SUV platforms, as well as performance sedans and specialty vehicles designed for custom suspension tuning.

HYPERCO springs are recognized for manufacturing precision coil springs across conventional and unconventional designs. This rear spring represents standard quality construction suitable for buyers seeking individual spring replacement or complete suspension rebuilds without premium pricing or exotic specifications.