TRAXXAS 1/6 4WD XRT 8S-78086-4 (exclusive use). TRAXXAS-1/5 X-MAXX 6S MONSTER TRUCK-77076-4. TRAXXAS-1/5 X-MAXX 8S MONSTER TRUCK-77086-4. The original design has been changed to a convenient quick release mount compatible with a wider range of motors, this structure is more secure and makes it easier to replace the motor teeth.
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