Exh. valve BT84-04 radiused .060 shorter

For Branch heads: this valve is .060" shorter than stock so valve can be sunk in the head to clear the piston on high lift cams. For STD heads: special, extra flowing, oversized valves,  available in two head sizes., Black Diamond exhaust valve for Branch heads Stem .3096"Head 1.615" Tulip Profile 23O Length 4.380"

High-Flow racing valves made from special super alloy by Precision Machining as a replacement for Branch and STD cylinder heads on Evolution Big Twins but also suitable for custom tuning jobs.