PAC Racing’s Street Performance RPM Series Beehive Valve Springs are constructed using our signature PACaloy super clean wire and are heat-treated in-house for precision spring rates and improved strength. They also receive a multi-peen process, polishing, and a Nano-Peen™ proprietary surface treatment for service life optimization. Applications include GM Gen III/IV LS, Ford 2V and 4V Mod Motors, Ford Coyote, Big Block Chevy, Ford 5.4L GT500 & Cobra Jet, Chrysler 6.4L Gen III Hemi, GM Gen IV LS7, and Ford Godzilla 7.3L.

• Built using our signature PACaloy super clean wire to ensure strength and durability
• In-house heat-treating for precise spring rates and increased strength
• Multi-peen process to optimize service life
• Polishing to improve operating cycles
• Nano-Peen™ proprietary surface treatment

Orders placed before 10:00 AM (EST) are typically processed the same business day. Orders placed after 10:00 AM will be processed the following business day.

Please allow extra time during promotions or new product launches, as order volume may be higher than usual.

All Race Factory orders are carefully hand-picked, packed, and shipped from our U.S. facility.

Returns are handled on a case-by-case basis and must be approved before any item is sent back. Please contact us to request a return authorization.

• Items must be unused, in original condition, and in the original packaging.
• Electrical components and sensors are non-returnable once installed or opened.
• Customers are responsible for all return shipping costs. We recommend using a trackable shipping method.
• All sale and clearance items are final sale and cannot be returned or exchanged.