K1 Gear (2 pcs) K1 Max Extruder Upgrade Gears Kit All Metal Filament Drive Extruder Gear for K1 / K1 Max / K1C Motor Nickel Plated Hardened Steel Plating 3D Printer Accessories Parts

On my K1c, I was having a problem with my first layer. small blobs would appear causing the model to dislodge from the bed, After replacing the gears, the problem was gone. worked so well, I bought another set for my K1.Very happy with the results.

I had the origonal plastic gears in my extruder and after a short time they wore out and started breaking causing a lot of failed prints.After installing these I haven't had a single failure. Totally worth the price.

Fit right into a new extruder and they seem to be working really well better then factory

These extruder gears fit perfect and are way better than the plastic gears that came with the printer.

The media could not be loaded. Initially would've given these a 5 star, but 4 months in and one has had the bearing become detached from the gear. Hopefully seller will send a replacement.

Was having issues with my K1 Max jamming I replaced the gears and that has fixed the issues I was having

Apparently the gears on the stock extruder are not quite as precise as they should be. These upgrade gears seemed to make my prints more consistent without lumps and voids. Recommended

Save your money some part of the tolerances are not correct this noise you're hearing in the video is what happens when you swap out your gears for these it will not grip the filament it will not do anything it pulses the extruder as the filament slips. I cannot tell you how frustrating all of this is this is the fourth set I've purchased all claiming the same thing none of them working.