An article of footwear including a forefoot portion, a heel portion opposite the forefoot portion, a midfoot portion disposed between forefoot portion and heel portion, and a longitudinal axis extending between a medial side and a lateral side of the article of footwear, the article of footwear comprising: a sole structure having a ground-engaging surface and a foot side surface opposite the ground-engaging surface, the sole structure having a lateral edge extending along a lateral side of a perimeter of the sole structure, a medial edge extending along a medial side of the perimeter of the sole structure, and a rearward edge extending along a rearmost portion of the perimeter of sole structure; an upper connected to the sole structure; and a heel system having a medial heel member and a lateral heel member, wherein the medial heel member is an elongate arm having a first medial end and a second medial end opposite the first medial end, wherein the first medial end of the medial heel member is connected to the medial edge of the sole structure and the second medial end of the medial heel member is connected to the rearward edge of the sole structure, wherein the lateral heel member is an elongate arm having a first lateral end and a second lateral end opposite the first lateral end, wherein the first lateral end of the lateral heel member is connected to the lateral edge of the sole structure and the second lateral end of the lateral heel member is connected to the rearward edge of the sole structure, wherein the sole structure has a first medial slot disposed on a medial edge of the sole structure and the first medial end of the medial heel member has a tab that is sized and shaped to fit within the first medial slot, wherein the sole structure has a second medial slot disposed on a rearward edge of the sole structure and the second medial end of the medial heel member has a tab that is sized and shaped to fit within the second medial slot and wherein the medial heel member extends from the first medial slot to the second medial slot, wherein the sole structure has a first lateral slot disposed on a lateral edge of the sole structure and the first lateral end of the lateral heel member has a tab that is sized and shaped to fit within the first lateral slot, wherein the sole structure has a second lateral slot disposed on a rearward edge of the sole structure and the second lateral end of the lateral heel member has a tab that is sized and shaped to fit within the second lateral slot and wherein the lateral heel member extends from the first lateral slot to the second lateral slot, and wherein the lateral heel member has a first rigidity and the medial heel member has a second rigidity that is different from the first rigidity. a sole structure having a ground-engaging surface and a foot side surface opposite the ground-engaging surface, the sole structure having a lateral edge extending along a lateral side of a perimeter of the sole structure, a medial edge extending along a medial side of the perimeter of the sole structure, and a rearward edge extending along a rearmost portion of the perimeter of sole structure; an upper connected to the sole structure; and a heel system having a medial heel member and a lateral heel member, wherein the medial heel member is an elongate arm having a first medial end and a second medial end opposite the first medial end, wherein the first medial end of the medial heel member is connected to the medial edge of the sole structure and the second medial end of the medial heel member is connected to the rearward edge of the sole structure, wherein the lateral heel member is an elongate arm having a first lateral end and a second lateral end opposite the first lateral end, wherein the first lateral end of the lateral heel member is connected to the lateral edge of the sole structure and the second lateral end of the lateral heel member is connected to the rearward edge of the sole structure, wherein the sole structure has a first medial slot disposed on a medial edge of the sole structure and the first medial end of the medial heel member has a tab that is sized and shaped to fit within the first medial slot, wherein the sole structure has a second medial slot disposed on a rearward edge of the sole structure and the second medial end of the medial heel member has a tab that is sized and shaped to fit within the second medial slot and wherein the medial heel member extends from the first medial slot to the second medial slot, wherein the sole structure has a first lateral slot disposed on a lateral edge of the sole structure and the first lateral end of the lateral heel member has a tab that is sized and shaped to fit within the first lateral slot, wherein the sole structure has a second lateral slot disposed on a rearward edge of the sole structure and the second lateral end of the lateral heel member has a tab that is sized and shaped to fit within the second lateral slot and wherein the lateral heel member extends from the first lateral slot to the second lateral slot, and wherein the lateral heel member has a first rigidity and the medial heel member has a second rigidity that is different from the first rigidity.