|The springs in this kit are wound from Kobe, super clean chrome silicon wire that has been heat treated and shot peened. These components offer optimal fitment, keeping lateral movement to a minimum. X-rayed at regular intervals to check for inclusions. They work together as a system, providing long life, and maximum performance.
(2) Black Diamond™ intake valves
(4) Valve springs
(2) Titanium retainers
Part 188181 fits the following machines