A railroad car truck including a first side frame, a second side frame, a bolster, and a first plurality of warp restraints, each first warp restraint configured to reduce, inhibit, or minimize warping of the bolster relative to the side frame, and in one embodiment including a first inner bearing race at a first end of the bolster, a second opposing outer bearing race at the first side frame, and a roller positioned in a channel formed by and between the first and second opposing bearing races, and a second plurality of warp restraints, each second warp restraint including a first inner bearing race at a second end of the bolster, a second opposing outer bearing race at the second side frame, and a roller positioned in a channel formed by and between the first and second opposing bearing races.