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Review: XK 4.3 Inch FPV  Monitor and 720P Camera Set For The XK X251 Whirlwind

XK X251 is an amazing mini quadcopter with powerful brushless motors, designed to be fast. If you are looking for a swift little quadcopter, this is it, read our full review here.If you already own the X251 now you can turn it into an FPV racer on the cheap!  For under $50 dollars you can add ...