Manual number: PD90439S1+PD90440S1 Product major function & usage:
1. The material is upgraded to steel #45 to make it stronger to utilize 2. the tiny bevel gears are modified to make to be 1 set for better energy transfer The dimension is same as initial This group of gears is first thing you need to alter right after you open the field and start having fun with the vehicle, the initial gears become faulty quickly particularly for this speedy crawler vehicle.
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