Premature debonding is one of the most prevalent failure modes in reinforced concrete (RC) structures strengthened with Externally Bonded (EB) Carbon Fiber Reinforced Polymer (CFRP). Researchers have proposed various anchor types to delay and/or prevent debonding of FRP from concrete. In this sense, spike anchors have been shown to improve the bond strength of CFRP sheets to concrete surfaces, however, their performance with precured laminates has been scarcely studied. This study aims to experimentally evaluate the performance of spike anchors to delay or eventually prevent the debonding failure of EB precured CFRP laminates from concrete. Even though spike anchors are typically installed over CFRP sheets, in this study, they were installed under the laminate to avoid damaging unidirectional fibers. A total of ten specimens were tested in pullout configuration and special focus was placed on the effect of anchor fan and dowel lengths. The experimental outcomes showed an increase in load-carrying capacity and ultimate slip of up to 80% and 288%, respectively, of the anchored specimens compared to the unanchored control specimen. Besides, decreasing the dowel length from 100 mm to 60 mm resulted in a decrease in the ultimate load with change of failure mode from laminate-spike interface to pullout of the anchor. Finally, no significant drop in the ultimate load and change in failure mode was observed by decreasing the fan length from 275 mm to 125 mm.