S&S Cycle 900-4320A Roller Rocker Arm Set For 1966-'84 HD® Big Twins Note pad Custom Dynamics 20201573

Custom Dynamics 20201573

Selected as number one Night Lens

Features pleated material around the entire perimeter of the filter

S&S 8:1 compression forged pistons

crafted from premium 6061 aluminum and anodized in the iconic S&S Blue

S&S Cycle 900-4320A Roller Rocker Arm Set For 1966-'84 HD® Big Twins Note pad Custom Dynamics 20201573S&S Cycle 900 4320A 1966 '84 big twins SH Series engines. S&S rocker arms for shovelhead engines are machined from 8620 steel forgings and heat treated for maximum strength. The forgings are designed to eliminate stress points and provide the strongest, most durable rocker arm possible. These roller rocker arms also feature the exclusive . 750" long S&S rocker arm bushings, with 50% more load bearing surface than stock . 500" bushings. An oil passage