I have this Tamiya (#53664) TT01 Aluminum Motor Heat Sink on my TT-01D. It works well on dissipating motor heat. I have tried replacing this using other brand heat sink with fan. After few runs, I have found out that the other brand heat sink could not dissipate motor heat efficiently compared to the original TAMIYA heat sink. TAMIYA have produced the heat sink with high quality material; nearly pure aluminum. Nothing can beats the TAMIYA hop-up option parts.