The MX6 comes with ATAC 13/17° cleats. These cleats are reversible to enable you to have either 13° or 17° of release angle. The MX4 is supplied with the ATAC Easy 10° cleats. This specific cleat allows you to have a 10° of release angle. Each cleat style is compatible with all MX pedal versions and can be purchased separately from online retailers or your favorite local dealer.