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Procomp Roller Rockers are extruded from 6061 T6 Aluminum. Manufactured with precision hydrostatic extrusion process which produces a uniform structure to eliminate any defects during the extrusion process. Larger needle bearing fulcrum can withstand valve spring loads up to 750 PSI, while the extruded body has a tensile strength over 60,000 PSI. Each completed piece is inspected and packed with 16 polylocks. You can expect 15+ horsepower just by bolting these on and tossing those heat generating stamped OE pieces, plus you'll increase your rpm range thanks to our lightweight construction.
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