Product description

Compatibility and purpose: These nozzles are made specifically for the Anycubic Kobra S1 Max hotend (S1 Max Hotend) and install in the stock heater block without special adapters. They are intended as direct replacements or upgrades for everyday and abrasive filament use.

Materials and construction: Each nozzle is engineered with a bimetallic tip and ceramic‑integral design that increases abrasion resistance and thermal stability compared with standard brass nozzles. The single‑piece construction helps keep filament paths sealed to reduce leakage and improve extrusion consistency during high‑speed printing.

Sizes and filament support: This pack contains two 0.4 mm nozzles optimized for 1.75 mm filament. They work well with PLA, ABS, PETG, TPU and other common filaments, and are suitable for higher flow rates and faster print settings where durability matters.

Operation and maintenance: The quick‑swap, tool‑free design lets you replace a nozzle in seconds, simplifying hot swaps and downtime. The nozzles seat cleanly into the hotend and support steady extrusion at elevated temperatures.

Package contents: The set includes 2 x 0.4 mm hardened steel nozzles, plus 2 silicone socks and 2 small silicone cleaning brushes for keeping the heater block and nozzle area tidy during use.

Pros

Highly wear‑resistant bimetallic/ceramic construction
Tool‑free quick‑swap for fast nozzle changes
Includes silicone socks and brushes for maintenance

Cons

Heavier than brass, which can affect very light hotend setups
Not ideal if you only ever print nonabrasive filaments
Only supplied in 0.4 mm size in this pack

VerdictA durable replacement set for Kobra S1 Max owners who print abrasive or high‑flow jobs. The bimetallic/ceramic nozzles are built to last longer than brass, the integrated one‑piece construction reduces nozzle oozing and improves consistency, and the tool‑free swap makes changeouts fast. Includes basic maintenance accessories so you can get back to printing quickly.

Reader reviews

R Parisi 5/5

Quick change and handles abrasive filaments

I swapped this hardened steel nozzle into my work printer to replace a brass unit. The tool‑free design made the change quick, threading was clean, and it seated without leaks. After running a variety of abrasive materials at higher temps the flow stayed consistent and I haven’t noticed under‑extrusion. The included silicone sock and brush were convenient extras.
Steebo 5/5

OEM fit and dependable print quality

Installs just like the original with no fitment problems and I was back to printing in minutes. Filament flowed smoothly, layers were tidy, and I didn’t chase extrusion issues after installation. The hardened steel feels much more durable than brass, and the extra sock and brush are handy additions.
Jeffythequick 5/5

Complete little kit — ready when you need it

Nice replacement kit for the S1 Max. Comes with the nozzle plus helpful extras so you don’t have to hunt for a silicone sock or brush. Easy to change out and works reliably — good to have a spare ready for when a clog or wear happens.
Mozart’s Star 4/5

Solid S1 Max replacement that lasts

If you use abrasive filaments or want fewer nozzle swaps, this is a smart upgrade. The hardened steel construction resists wear and the nozzle worked flawlessly on everyday prints. Installation was fast, no leaks, and the included maintenance items are useful. Fits the Kobra S1 Max exactly.