Kit Completo Eje Trasero 28" Piñón Cadena Freno 50-125cc ATV Quad Buggy Go Kart
Sprocket 420-37T or 428-41T Sprocket( depend on your choose). Brake caliper hole distance:63mm， Hand brake or Foot brake ( depend on your choose). Axle total length:710mm（28" ）. Chain ： 420-132links chain or 428-140 links chain.