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special design for X4 front and rear upper arms
This is the ultimate upgrade kit for people who are sick of seeing original plastic parts breaking
and then pull it away to remove all the dirt and grime
You can also use it when you use new screws for the first time to ensure a perfect fit
FACTS MACHINE v3 – BRUSHLESS ROTOR TESTER Driver Set special design for X4 frontFACTS MACHINE v3 BRUSHLESS ROTOR TESTER Have you ever been at a race and wondered how the top finishers seem to have faster motors than everyone else? One of the reasons for this is because the fast guys know how to tune their motors with different rotors. Most motor companies now offer optional tuning rotors, but without a way to measure their magnetic strength, there is no way for you to know what strength rotor you are putting in your motor and
US$ 6250.00
US$ 6750.00
US$ 28.00