●Please note that it is only suitable for square truck rods. ●The aperture of the small synchronizing wheel: 10MM/0.39 IN (please confirm whether the diameter of the motor shaft is 10MM). ●Please confirm whether the hole pattern of the PU wheel is suitable, the cruiser flywheel, diameter: 83/90/97/100MM, width: 52MM. 6 rectangular wheel holes inside the PU wheel are ●only suitable for 60 series (6374) brushless motor, hole-fixing spacing of flat screws on motor shaft end: Φ30.0* 30.0/Φ40*40 ●5M HTD Belt, width: 10MM, circumference: 290MM/300M(Meach one), pulley wheel ratio: 36/18 5M HTD.