54T main gear comes with 15T/17T/19T motor pinions and 3.175mm coupler.Three pinions is 5mm, Using the coupler can convert Three pinion apertures to 3.175mm.So these RC Gear Set work on motors with 5mm or 3.175mm shaft diameter, such as 3660 3670 3674 4274 4268 550 540 3650 etc series motors. 54T main gear replace 3956.
0.8 metric pitch; compatible with 32-pitch; pinion inner hole diameter: 5.0mm/0.196 inch; main motor gear dia.: 45mm/1.77 inch.
Made of metal steel, it has high strength and wear resistance, and can cope with high-speed and high-stress RC model operation.
High-precision machining: The gears have high precision and stable meshing, which helps reduce gear wear and noise and extend service life.
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