"Using the Nitro Rush Evo Slipper Clutch with the HPI #72207 Heavy Duty Disk Hub (Aluminium/Hard Anodised) is a way to enhance the performance and reliability of the slipper clutch mechanism on your truck as the Heavy Duty Disk Hub offers better heat resistance and improved heat dissipation over the standard part. The instructions below show you, how to install the HPI #72207 Heavy Duty Disk Hub (Aluminium/Hard Anodised) on your Nitro Rush Evo." For the complete tutorial click here.