BLACK DIAMOND EXHAUST VALVE HD TWIN CAM 88-103" 05-10 68-7235 Ventilvar has a greater cooling

Ventilvar has a greater cooling capacity than the original half-pulley

Upper and lower shields removable for maximum ventilation

This is the ideal exhaust for any off-road or closed course

Rings in very strong modular cast iron with ground

BLACK DIAMOND EXHAUST VALVE HD TWIN CAM 88-103" 05-10 68-7235 Ventilvar has a greater coolingAll 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.