... us it is the rear wheel or the front wheel you need after you pay it.For the wheel size, we have ... 26", 28" available, please advise us the size of the wheel you need.For the brake we normally send you with drum ... motor Dimension of the tire: For 12" wheel, the tire size is 2.125; For 14" wheel, the tire size is ... , please specify it to us; For 28" wheel, the tire size is 1.5Reinforced Bike rim and tire ...