This is the optional TRF501X Damper Hard Titanium Coated Piston Rod (Rear)
From Tamiya. 54043
For use with the Buggy Aeration Filled Damper Set,
FEATURES: Titanium Coated To Prevent Rust and Enable Smoothness
INCLUDES: Two rods
SPECS:
Length: 1.94″ (49.6mm)
Diameter: .09″ (2.4mm)