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rattle-free installation
float valve and jets for one carburetor
and performance you demand to take your riding to the next level
Featuring advanced profile technology
BLACK DIAMOND EXHAUST VALVE HD SHOVELHEAD 78-83 Make_Polaris rattle-free installationAll 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. Black Diamond Valves are light, strong, one piece forgings with profiles that provide excellent flow characteristics.
