The following items will work as a direct replacement
#91776RC10B6.1 Caster and Steering BlocksB6 Steering Blocks
This is discontinued. Perhaps this will work for you: #91776.
This part fits the following vehicles
- RC10B6
- RC10B6D
- RC10B6 Club Racer
#91776RC10B6.1 Caster and Steering Blocks