alternatively bolster 116 can be integrally molded with the body fig4 and 5 illustrate bolster 116 which includes one embodiment of a first caster mount 138 and a second caster mount 156 as illustrated the first and second caster mounts 138 and 156 are components of the bolster 116 in other embodiments the first and second caster mounts can be separately connected to the body of the ride on toy or can be integrally molded with the body of the ride on toy as illustrated in fig4 and 5 first caster mount 138 has a first receiver 122 and a first caster receptacle described below second caster mount 156 has a second receiver 120 a second caster receptacle described below and a boss 124 first caster 112 has a caster stem 126 a stopper 128 an engagement shaft described below an engagement member 130 and an axle 132 second caster 114 has a caster stem 134 a stopper described below an engagement shaft described below an engagement member 118 and an axle 136 as illustrated in fig4 engagement member 130 of the first caster 112 engages the first receiver 122 and the engagement member 118 of the second caster 114 engages the second receiver 120 the engagement members preferably engage the receivers via a snap fit or press fit however the engagement members can engage the receivers in any other suitable manner such as with hardware including but not limited to one or more cotter pins e clips or set screws fig4 illustrates casters 112 and 114 correctly assembled with and engaged by bolster 116 with respect to first caster 112 the engagement member 130 and the engagement shaft of the first caster can be inserted into and are received by the first caster receptacle and the first.