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EXCELLENT INVESTMENT, THEY MESH PERFECTY, INSTALL ONCE AND DONE. WORTH THE MONEY FOUR TIMES OVER! JUST REPLACE THE PLASTIC ONES FOUR TIMES AND YOU HAVE BOUGHT A SET ALREADY. I HAD TO REPLACE THE PLASTIC ONES AFTER TWO FLIGHTS AND IT HAD A VIBRATION PROBLEM EVEN AFTER I CHANGED THE TAIL CASE. ONCE I INSTALLED THESE METAL GEARS ALL YOU FEEL IS THE BEARINGS FREE SPIN!. I HAVE HAD A FEW FLIGHTS WITH THEM AND IT IS SMOOTH FROM SPOOL TO FLIGHT AND THE TAIL IS POINT ON NOW. I RECORDED THE TAIL ON VIDEO, NO VIBE WATSOEVER AND IT STEERS LIKE A CAR, IF YOU BUY A 130X GET THESE GEARS WITH IT MANDATORY. YOUTUBE IS FULL OF 130X TAIL VIBRATION TIPS, THIS IS THE CHIP FOOSE OVERHAULING UPGRADE, GET IT NOW.

These gears are precision built. They fit the shafts perfect with no slop and the mesh could not be better. When I installed them and rotated the rotor I could feel a slight catch in a rotation. Spun the rotor by hand a few time then spooled it up then is was gone. One of the teeth must of had a burr on it or something. Since its cold here with snow I hovered it in the living room and the tail is rock solid.
Great job Horizon !!

Bought these gears at the LHS since the plastic gears are garbage also on the 130x and during inverted flight tail was a complete loss and was out of control. Needless to say it crashed since I had no control over the 130x with total loss of tail. After looking at the tail and what was damaged the rear tail gear (c) came off in flight, hence the tail loss. Lost the gear also and now have to decide if im going to spend the money on the metal gears again! Horizon

These metal gears are expensive, but poorly machined. Mine bound so badly that they were simply useless. Wouldn't buy them again if they were a nickle.