Bowden Extruder Upgraded V3.0 Dual Drive Gear High-Performance Parts for CR10,Ender 3 Series,Anycubic Mega S, I3 Mega Chiron,Tevo Tornado, Wanhao D9, Anet A8 E10 and Prusa I3 DIY 3D Printer

I couldn't find an extruder to fit my Anycubic Kobra Plus. Tried this one and and still works great after over a month.

works great with pla, ninjaflex, cf nylon on ender 5 printer in direct drive. previously tried the winsinn dual gear extruder and it is trash compared to this. using it with a pancake stepper and it takes around 424 steps/mm in my setup. construction seems perfectly solid and everything lines up. using it with a printed mount bracket from hero me gen 5 on thingiverse, where it is only fastened by 3 screws thru a vertical spacer to mate with the stepper motor. because of this it was initially pushing up away from the mount when extruding, which resulted in puzzling print defects. eventually noticed this movement and strapped it down with zip ties and everything is perfect now.

I purchased 2 if these for replacements a couple of months back. Since they were spare parts, I just opened them now that I need one. They are both junk. They are seized up completely and the freaking label is even upside down on them. There was NO quality control for these and they are out of the return window. Wasted money on buying from this company. Buyer beware!!!

Exactly what I was looking for

Fairly easy install, although you might have to fiddle with your filament runout sensor to get alignment correct. Depending on which direction you run it, you may or may not have to reverse the polarity on your stepper motor (it works fine wither direction). Runs TPU and flexibles very well, if you still have issue with flexibles your next step should be Capricorn tubing (you should be running that anyway). Esteps will vary with printers, I started with 415 and ended up running 417. If your firmware or board doesn't allow for adjusting esteps, you can adjust your flow percentage to that value. While a great extruder, it does make changing filament a bit more of a pain, as you can't just slide filament through it, and if you try doing it via the GUI settings it may take 3-4 filament changes that way. Easiest I've found is using the gear as a thumb wheel, which can tear up your skin after a few times. I've swapped this on 3 printers so far including a CR10-S5, Tronxy XY3, and Ender 3 pro, most reliable feed rate you will get (as long as your settings are dialed in), and dirt cheap!

I am using this to replace the stock extruder on my Longer LK4 Pro. And I have been using this for about a week. PROS: No noticeable skipping, factory unit skipped a lot despite tightening Accurate repeatable extrusions once e-steps are reconfigured. (anyone changing extruders should be calibrating e-steps) Easy engage/disengage mechanism for filament change. Cons: As the unit now requires 4x more e-steps to push the same length of filament the unit does make a bit more noise. No getting around this, just something to note. Happy Printing

Meh...its a knockoff. Its better than the crap OEM extruder...but not much better Alignment of fasteners, spring size/quality, softness of plastic gears...all bad. This works better than the OEM...but will not last very long. Would not rebuy or recommend.

Well made and easy to install. Note you must re-calibrate the extrusion steps per mm and get it in your firmware.