Carrillo Rods are one of the best steel rods in the industry. The A beam configuration is available in Pro-A and Pro-Super A (SA). Typically, the Pro-A beam configuration is well suited for less demanding, more economical, high-performance, aftermarket applications. And the Carrillo Pro-Super-A (SA) bridges the gap between the Pro-H and Pro-A applications.
SR20 rods can be machine to accept the 19mm bearing.