Kibblewhite Standard Intake Valve 33.0mm / 1.299" Black Diamond 60-60770 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 Black Diamond™ stainless steel valves are impregnated by a special German process to a depth of .002”, with a surface build up of .0002”. This “Black Diamond™” process improves wear properties, reduces friction, and provides resistance to corrosion and wear that is superior to chrome and nickel electrolysis plating. Each valve is designed using Finite Element Analysis software, and profiles are tested on our computerized flow bench. Black Diamond™ Valves are lightweight, strong, one piece forgings with profiles that provide excellent flow characteristics. These valves are forged from a unique stainless steel alloy particularly suited for this application. This alloy is especially receptive to our proprietary face hardening process, and is designed to give long life in maximum performance, high RPM applications. Black Diamond - One pieced forged stainless steel valves impregnated by a special Germany process to improve wear properties and reduce friction. This process provides resistance to corrosion an wear that is superior to that of hard chromium and electrolysis nickel plating. Light and Strong - A combination of FEA stress analysis and flow bench testing of prototype valves allows engineers to optimally balance valve mass, strength and airflow characteristics. A unique tulip and dish are designed for each application. Suzuki Models
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