236445 A Type in Black Diamond Head Dia 2 000 Stem Dia 3107 Profile

These blank stem oversized valves from Kibblewhite Precision Machining are engineered for high-performance engine builders and tuners working with custom ported heads. The exhaust valves feature a patented 44-degree tulip angle designed to maximize gas speed and improve overall flow characteristics. These valves are supplied with extra-long stems and oversized heads, allowing for precise custom fitment during the head-building process. Because they are blank stems, they require professional machining to shorten them to length and cut the keeper grooves. Kibblewhite uses specialized materials to ensure these valves withstand the extreme thermal and mechanical stresses of modified Harley-Davidson engines.