●This is using the same separate type design of TREX600, easy to replace the gear by removing four screws, no need to remove the one-way bearing.
●This new main gear is great for the balance. New super strength plastic-steel material, multinational patent design, light weight, and special cooling blade design is good for lowering the temperature of electronic equipment and motors. It can efficiently increase the wind flow.
●Use for TREX450 XL/CF/SE/S(tail drive gear 25T)

1.If there is any interference when assembling, please modify it as the following pictures



2.Before assembling the main gear, please use a cutter knife to cut off the part marked in yellow on the tail drive gear(approx. 0.5mm).

Includes:
●New main drive gear (150T) x 1
●New autorotation tail drive gear(106T) x 1
●450 main Gear Case x 1
●Shaft collar x 1
●One-way bearing HF0612 x 1(Φ6xΦ10x12mm)
INA Made in Germany
●Cross screw x 4(M2x4mm)
●Weight:26.5g/set

Please explain:
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