These Schumacher Racing Products rear hubs are a metal factory replacement for the Cat PB 4x4 buggy platform. Sold as a pair, they serve as the rear uprights that locate the wheel bearing and connect the rear suspension geometry. The aluminum construction offers a more durable alternative to standard plastic hubs for competitive or heavy-use driving. Features: Aluminum construction Sold as a pair Fits Schumacher Cat PB 4x4 platform Direct factory replacement for rear uprights 7/7/26 cs