RPM
ECX HD CASTER BLOCKS BLACK BST CIR TOR RUCK 2WD (PART# RPM73442)
These are the RPM Heavy Duty Caster Blocks for the 2WD ECX Torment, Ruckus, Circuit and Boost. **Fits 2WD Versions Only.** FEATURES: Composite plastic construction INCLUDES: Left and Right Caster Blocks