The A-55 series motor comes with a M4x0.7 threaded hole in the front of the motor shaft, for single bolt spinner mounting, as is common for 30cc-40cc size spinners. However some spinners do use a M5x0.8 bolt instead. For these cases we have the A-55 Spinner Adaptor (M5 bolt)
This adaptor threads onto the M8x1.25 motor shaft, then has M5 threads on the front of it, allowing you to thread your M5 spinner bolt to the front of the shaft.
12g
View Scorpion A-55 Spinner Adapter (M5 bolt) Full Dimension
