Official Creality K1/K1 Max/K1C Hotend Upgrades Kit, Unicorn K1 Series Ceramic Heating Block, 3D Printers Hotend Integrated Quick-Swap Nozzle, 300°C High Temperature, 600mm/s (Terminal Without Buckle)

Pretty good I like it but it's a pain In the butt with the disconnect and connections

Fit and worked perfectly in my K1 Max. Much better design/quality than the factory one.

My K1 is a later model that already has the red cover hot end, it printed well but the nozzle was ready for replacement. When searching for a new nozzle I saw this kit which included the new unicorn nozzle for not much more cost than a replacement nozzle. Bit the bullet and bought this upgrade kit. Install took about 10 minutes, everything fit perfectly. Fired up the machine with a fresh roll of filament. Ran a self test (input shaper and auto level), max flow test, and a very fast temperature test. After about 3 hours of test prints and a couple very minor tweaks my K1 is printing better than it ever has. This new hot end and the new default profiles in the crealitu slicer are so much better than what the K1 shipped with. It's obviously very strongly inspired by the Bambu products but at a fraction of the cost and honesty better part and upgrade availability. Very happy with my K1 and this unicorn hot end.

I ordered this Creality hotend upgrade kit expecting the newer 2025 version with the updated K1C adapter clips, but what I received is clearly the older version shown in the listing photos. The main difference is the cap/clip design. The included clip did not properly fit the heater wire base, so I had to very carefully remove the heater wire from its base to make it work. After some gentle adjustment, I was able to install the heat wire clip and get everything running—so functionally it works, and my machine is back up and printing fine. That said, the listing is misleading. It should clearly state that this is the older version and does not include the updated K1C adapter clips introduced in newer models. Buyers expecting a drop-in upgrade for the latest K1C setup may run into the same issue I did. Overall: workable product, but be prepared for some modification if you’re expecting the newer clip design. Clearer product description would make this a much better buying experience.

I have had this for a few months now , the heat this can handle is great . Fits perfectly in place of the one I had to pull off . I have had some clogging with them but I would think that’s expected every now and then . For the price , I would say I get my moneys worth with all the printing I have done since swapping to this setup .

Been using this for months on a printer that gets a ton of use. No complaints so far. Good qualty from creality and setup was not too difficult. You will need some patience for small components.

​Why did you pick this product vs others?:​ I have been waiting to see how this nozzle system would be adopted, as there have been so many systems over the years that go nowhere. After seeing other manufacturers adopting the same nozzle system I decided to try this upgrade. Clogs and extruder issues are extremely difficult to clear when using the original K1 Max hotend system, which uses Volcano nozzles. With this Unicorn system, clogs and extruder issues are very easy to clear. PLUS, I can swap nozzles in seconds now. ​Fit:​ The new parts fit really well, though you may have trouble removing the original components. Creality used a HUGE amount of hot glue to glue in connectors, making the removal extremely difficult. Try using isopropyl alcohol to remove the glue. It may take a bit of time to do this, but it will prevent you from destroying the PCB while trying to remove the connectors. ​Value for money:​ Just like the original extruder had to be replaced, which Creality provided free of charge, the original hotends also need to be replaced. However, I had to pay $137.92 in total to upgrade both of my K1 Max printers to this new system, which includes replacing the replacement nozzles. Fixing manufacturing defects should be free, as I have been dealing with these issues for 2 years. If you need to repair an existing Unicorn system due to some failure or accident, I think the price point is good. I did find that 1 claim in the description is false. There is absolutely no difference in the maximum flow rate of this Unicorn system and the original Volcano system. I had a maximum volumetric flow rate of 22cm^3/s before, and a test after the installation I have a maximum volumetric flow rate of 22cm^3/s now. No difference at all. What I did gain is the ability to clear issues much faster, and easier, while also being able to hot-swap nozzles in less than 30 seconds. These plusses are more than enough reason to upgrade, but I did remove 1 star for the false claim of the maximum volumetric extrusion increasing to 32cm^3/s. BEST

My K1 clogged up and had a massive build up of leaked out filament from the hotend which ruined my extruder and the hotend. I struggled to remove the old one but once I got that out I got this screwed in and up and running in a few minutes so the installation was easy. printed good so far!

No sirve para la K1 Max está un poco más chico lo que hace que la boquilla obstruya el cortador de filamento del extrusor.

Perfect drop in upgrade for any 1st gen K1 or K1 Max! Now I am using unicorn nozzles in both the K1 and K1 Max, and will never need to worry about filament oozing out because I didn't tighten the hotend enough again!