Yokomo RP-056A Racing Performer Rotor #56 M3 D12.5xd5.00  [RP-056A]

That's an optional rotor for rushing Performer M3 show machines enabling you to adjust the vigor feeling according to competition regulations. With a magnet outside diameter of 12.5mm and internal diameter of 5.00mm, it makes usage of a high-power magnet that achieves overwhelming acceleration and top expense, offering you a plus in occasions.
although magnetic force is lost considering high conditions, you are going to charge the engine energy by changing the rotor! You'll regain your initial energy and feeling.