A surgical instrument, comprising: an elongate shaft assembly defining a shaft axis (SA-SA); a surgical end effector pivotally coupled to said elongate shaft assembly for selective pivotal travel about an articulation axis (B-B) that extends transversely relative to said shaft axis (SA-SA); and an articulation system, comprising: an articulation driver supported for selective longitudinal travel relative to said elongate shaft assembly in a distal direction and a proximal direction; and means for operably coupling said articulation driver to said surgical end effector, said means for operably coupling being configured to apply articulation motions to said surgical end effector in response to longitudinal movement of said articulation driver, said means for operably coupling being further configured to pivotally and axially move relative to said surgical end effector; wherein said articulation driver is coupled to said means for operably coupling on one lateral side of said shaft axis (SA-SA), and wherein said means for operably coupling is coupled to said surgical end effector on another lateral side of said shaft axis (SA-SA), wherein said means for operably coupling comprises a triangular shaped link comprising: a first link corner portion operably coupled to said articulation driver; a second link corner portion operably interfacing with said surgical end effector; and a third link corner portion pivotally coupled to a distal end of said elongate shaft assembly,wherein said second corner portion of said triangular shaped link is operably coupled to an end effector driver link that is coupled to said surgical end effector for pivotal and axial travel relative thereto, wherein said end effector driver link comprises an intermediate proximal drive link end that is pivotally coupled to said triangular shaped link and an end effector driver link end that comprises an axial slot that is configured to slidably receive an end effector attachment member therein. an elongate shaft assembly defining a shaft axis (SA-SA); a surgical end effector pivotally coupled to said elongate shaft assembly for selective pivotal travel about an articulation axis (B-B) that extends transversely relative to said shaft axis (SA-SA); and an articulation system, comprising: an articulation driver supported for selective longitudinal travel relative to said elongate shaft assembly in a distal direction and a proximal direction; and means for operably coupling said articulation driver to said surgical end effector, said means for operably coupling being configured to apply articulation motions to said surgical end effector in response to longitudinal movement of said articulation driver, said means for operably coupling being further configured to pivotally and axially move relative to said surgical end effector; wherein an articulation driver supported for selective longitudinal travel relative to said elongate shaft assembly in a distal direction and a proximal direction; and means for operably coupling said articulation driver to said surgical end effector, said means for operably coupling being configured to apply articulation motions to said surgical end effector in response to longitudinal movement of said articulation driver, said means for operably coupling being further configured to pivotally and axially move relative to said surgical end effector; wherein said articulation driver is coupled to said means for operably coupling on one lateral side of said shaft axis (SA-SA), and wherein said means for operably coupling is coupled to said surgical end effector on another lateral side of said shaft axis (SA-SA), wherein said means for operably coupling comprises a triangular shaped link comprising: a first link corner portion operably coupled to said articulation driver; a second link corner portion operably interfacing with said surgical end effector; and a third link corner portion pivotally coupled to a distal end of said elongate shaft assembly,wherein said second corner portion of said triangular shaped link is operably coupled to an end effector driver link that is coupled to said surgical end effector for pivotal and axial travel relative thereto, a first link corner portion operably coupled to said articulation driver; a second link corner portion operably interfacing with said surgical end effector; and a third link corner portion pivotally coupled to a distal end of said elongate shaft assembly,wherein said second corner portion of said triangular shaped link is operably coupled to an end effector driver link that is coupled to said surgical end effector for pivotal and axial travel relative thereto, wherein said end effector driver link comprises an intermediate proximal drive link end that is pivotally coupled to said triangular shaped link and an end effector driver link end that comprises an axial slot that is configured to slidably receive an end effector attachment member therein.