RBS carries a complete supply of RCD gear drive parts for the racer that might need to make a repair or is building a brand new combination. Here is one shining example the eleven bolt vernier billet alum. fuel pump drive hub.
Designed to be used with RCD's 392/417 cam hub register on the hub is 1.600" with .625" hex broached to drive an RCD fuel pump driveshaft off the camshaft. Fuel pump drive hub is hard anodized for a durable finish. Hub is 1.390" tall from cam gear surface to top of drive hex.