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PSI LS Beehive Valve Springs are the highest quality single valve-springs we can find, utilising factory locks and retainers to keep cost & valve-train weight to a minimum.
Each and every PSI spring begins with wire that is made from the highest quality Chrome-Silicon alloys. Through the use of the latest developments in melt technology, composition control and casting practices, these alloys are held to the strictest cleanliness standards ever offered. As a result, the use of these super clean materials also insures the lowest inclusion content possible.
Their superior technology does not stop with the wire. PSI uses state-of-the-art CNC equipment throughout the manufacturing process to ensure batch-to-batch consistency and valve springs that are held to the tightest tolerances in the industry. At PSI, all production processes are done in-house according to strict Quality Control procedures with each spring proudly made in the USA. All PSI springs are 100% load tested and set matched for the ultimate in customer convenience and satisfaction.