This is an RC-scale rear brake disc made for the Team Losi Promoto-MX motorcycle platform, finished in a gold color and manufactured from aluminum for a balance of weight and durability. It is presented as a direct replacement hop-up intended for model maintenance, visual upgrade, or tuning trials where the disc itself is swapped during setup and repairs.
Compatibility is focused on Promoto-MX model bikes that accept the standard rear disc mounting; the part installs at the rear hub position and uses the model's existing hub fasteners. Installation typically involves removing the rear wheel, exchanging the disc, and reassembling the wheel while checking alignment and secure fastening before testing.
In tuning and maintenance workflows this disc serves as a replaceable wear item and an aesthetic option. Use it to keep a Promoto-MX motorcycle serviceable between sessions, to evaluate disc fit during setup changes, or to restore a machine after a component swap.
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