C&U wheel hub bearings are offered in generation I, II and III designs. Hub generation I is a double row design mainly for driven wheels. Hub generation II is a double row design with an integrated outer ring flange. Hub generation III is double row design featuring a flange for wheel and brake attachment and a second flange for attaching to suspension.
![](https://www.cubearing.com/wp-content/uploads/2013/05/Wheel-Hubs-624x599.jpg)