729529 350 8 9MM Thread Length 1 4 36MM Over All Length Suggested

Kibblewhite Precision Machining Inc. (KPMI) compression release valves are engineered to alleviate the strain on starters and batteries during high-compression engine starts. These M10x1 threaded valves effectively mitigate hot start issues common in performance Harley-Davidson builds. Each valve features a custom molded knob designed to remain cool to the touch, ensuring comfortable manual operation. With a closing force resistance of 5-7 Newtons, these components provide reliable sealing once the engine fires. The KPMI brand is embossed directly onto the valve body as a mark of manufacturing precision. These valves are sold as a set of two, providing a complete solution for dual-plug or twin-cylinder head configurations requiring decompression.