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ACUITY's K-Series Transmission Performance Spring Upgrade uses thicker wire and additional preload to provide a very satisfying
5 inch thick 2-row core with CSF’s exclusive B-tube technology
heat transfer
Proven to make more power and less noise for a wide variety of K20 and K24 engines
ARP Head Studs K20/K24 Gauges ACUITY's K-Series Transmission Performance SpringFITS: 8th Gen Honda Civic Si ARP uses a premium grade 8740 alloy that is rated far superior to aircraft quality. Each stud is placed vertically in special racks and precisely heat treated to 200,000 psi. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best. Following heat treat, each stud is centerless ground to