Creality3D Official Printer Ender 3 Dual Z-axis Upgrade Kit with Lead Screw, Metal Power Supply Holder and Stepper Motor, 3D Printer Ugrades Kit for Ender 3, Ender 3 Pro, Ender 3 V2

This is a great upgrade! It improved my bed leveling and print quality and easy to install. This one couldn't connect to the original Z cable, so you will have to open up the bottom and run the cable to the mainboard. But hey, you've got an Ender, you're a pro at taking it apart by now!

This was very easy to install. the instructions are horrible as with nearly every creality product, but if you can build one of their printers you can figure out how this should go on.After install my print quality wasn't quite right (small amount of bed adhesion issuses)after squaring the x axis and tightening the concentric nut, my printer is working flawlessly and can hold the weight of a direct drive system (whole reason I bought this was for holding the weight)

I'm impressed with this upgrade. It was difficult in installing it because the directions were vague. Online instructions didn't help much either but I got it together. The printer is running a lot more quiet and smoother. I also installed the direct feed extruder kit. It's been very smooth all day!

What the title says

Really helps with the quality of prints and a very smooth fit and easy to install

Install is quick and easy. All parts are genuine and quality. Dialing in the printer after install was a bit tricky for me. Lubing the lead screws os a must and making sure both stepper motors are at the exact same height and distance from the gantry is equally important. Then the guides at the top of the gantry need to be dialed as well. Not to loose, not to tight. After all of that all you need to do now is make sure the z axis is level on the lead screws and to not adjust them by hand anymore. You'll never spin both lead screws exactly the same and now the z axis isn't level anymore. Like I said it. An be a bit challenging to dial, but not impossible.

This is a great product that has improved the quality of my prints and the stability of my printer’s z-axis movement. I put this on my ender 3 Pro and am adjusting to the change. My only complaint is that the end of my gantry attached to the new Z screw tends to creep upward a millimeter or two, making bed leveling a bit more of an involved task. I may chalk this up to an installation error but it is what it is.

Purchased this to increase the accuracy of my Ender3 V2 3D printer. Instruction are a bit spartan and you have to open up the printer to get to the main control board to attach the wires for the servo. Wire routing is a challenge to get a clean install but all the parts are there and once installed printer does have better "Z" axis print quality due to the increased vertical axis stability. The second servo doesn't seem to need any synchronization with the existing servo. Just ensure that the jack screw is centered prior to turn on. You may need to lightly oil the jack screws on both sides after the install to ensure smooth operation.