This is the list of class 4 zoids who evolve into a class 5.

Slash Liger evolves into the Liger Zero.

Slash Liger evolves into the Liger Zero X.

Reptor evolves into the Berzerk Fury.

Geno Saurer evolves into the Geno Breaker.

Cannon Liger evolves into the S. Blade Liger.

DiBison evolves into the S. Bison.