Extended Length Swivler Spring Cup 5in Spring

The Extended Length Swivler Spring Cup 5in Spring from ALLSTAR PERFORMANCE is designed for builders and mechanics who require precision in coil-over suspension geometry. This heavy-duty component acts as the interface between your coil spring and shock assembly, effectively absorbing load transfer while ensuring consistent spring seat alignment during compression and rebound cycles.

Constructed from durable steel, the Extended Length Swivler Spring Cup features a swivel design that allows for rotational freedom during installation and adjustment. This design helps prevent binding or cross-threading, which can affect spring preload accuracy. The extended length profile accommodates larger coil diameters and extended shock bodies, making it suitable for adjustable or air-suspension applications.

This spring cup is ideal for fabricators, suspension specialists, and enthusiasts looking to enhance their vehicle's performance. Its robust design is critical for both street and competition environments, where suspension cycles can reach tens of thousands.