20-21260 KPMI, compression release valve set

Starting a high-compression or large-displacement V-twin can put a massive strain on your starter motor and battery. These Kibblewhite compression release valves are a professional solution, featuring M10x1 threading and a simple push-to-activate design that automatically closes once the engine fires. With a 5-7 Newton closing force, they are built specifically for high-performance applications. The knobs are molded for a cool touch to protect your fingers when the engine is hot. Sold as a pair, these valves feature an overall length of 1.750 inches and fit various Harley-Davidson models requiring manual releases.