Seller notes

These valves must be used with Kibblewhite triple groove valve spring kits. To prevent keepers from popping out in extreme performance applications, KPMI has developed these Hayabusa valves with triple bead style grooves. The three beads and grooves make it virtually impossible for the keepers to pop out even under the most severe conditions. This combination has been tested, raced and proved successful in situations where single bead keepers had popped out causing catastrophic failure. All KPMI...

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