The 100 series is McLeod Racings premier organic/organic disc. Made with a steel backed facing and a marcel drive plate along with a 6 spring 6 rivet hub the 100 series disc is a robust disc at a economical price point. The 100 series is offered in several different diameters and inputshaft splines to meet your needs. The 100 series has a smooth engagement for those hot rodders that just want to cruise the boulevard.