18,000 To 20,000LB Capacity - 2 Leaf Spring
18,000-20,000LB capacity per axle suspensions
"Hockey Stick" - Rear end of spring curves inward towards the frame rail
First design - With 2 leaf spring
RB-234 became optional in 1998
RB-268 replaced RB-205 and RB-234 during 2002
For springs with RB-268 - Bushing flange is towards the frame rail