Tamiya Tamiya 54960 - TC-01 Aluminum Damper Extenders (4 Pcs.) $7.75 Tamiya #54960 - TC-01 Aluminum Damper Extenders (4 Pcs.) This Hop-Up Option part is for use with the TC-01 chassis. The part replaces the stock plastic part with aluminum parts thereby contributing to a high-spec suspension setup. ??Aluminum Damper... Add to Cart