Upper Spring Cup 5in OD Spring

The ALLSTAR PERFORMANCE Upper Spring Cup 5in OD Spring (ALL 56114) is a bolt-on suspension component designed for drag racing and high-performance vehicle builds where chassis control and load transfer are critical. This upper spring cup is essential for any serious bracket racer or street performance application that relies on precision weight transfer during acceleration.

Manufactured from steel with a black powder-coat finish, the cup measures 3.25 inches tall and accommodates a 5.0-inch outer diameter spring—a common specification in aftermarket drag suspension setups. The powder-coat protects against corrosion during repeated cycles and extended storage, which is crucial for vehicles subjected to moisture or salt exposure. Weighing 1.84 lbs, the component maintains structural integrity without unnecessary mass penalty.

The bolt-on design simplifies installation and allows for straightforward replacement or upgrade without frame modification. This component is ideal for builders upgrading or restoring drag racing suspensions, weekend bracket racers dialing in chassis geometry, or performance shops standardizing on ALLSTAR components across multiple builds. The spring cup's role is fundamental—it anchors the spring and controls how load distributes under hard acceleration.