Attributes

Brand	-
Category	Root / Office Equipment, Supplies & Services
Origin	-
Compatible Models	Bambu Lab X1, X1-Carbon, P1P, P1S Series
Nozzle Material	Hardened Steel
Nozzle Diameter	0.4mm (Standard)
Heater Power	40W High-Efficiency Cartridge
Thermistor Type	NTC 100K Precision Sensor
Max Temperature	300°C Continuous Operation
Filament Compatibility	PLA, PETG, ABS, ASA, Carbon Fiber, Glass Fiber
Assembly Type	Complete Hotend Assembly (Plug & Play)
Cooling System	Optimized Dual-Channel Airflow Design
Package Contents	1x Hotend Assembly, 1x Installation Tool Kit

6 reviews

Anonymous

Mar 31, 2026

Rating: 5/5

Must-have for engineering materials

If you plan on printing anything other than basic PLA, get this. The hardened steel nozzle prevents the ovalization that happens with brass nozzles when printing abrasive composites. Very happy with this purchase.

Anonymous

Mar 27, 2026

Rating: 5/5

Saved my printer from wear

My stock nozzle was wearing out fast with glass-filled PETG. This Leji upgrade is a game changer. It handles the abrasive material without any degradation in dimensional accuracy.

Anonymous

Mar 26, 2026

Rating: 5/5

Perfect for abrasive filaments

I switched to this hardened steel assembly specifically to print carbon fiber nylon, and it has been flawless. No clogging issues so far after 200 grams of printing. The installation was straightforward on my X1-Carbon.

Anonymous

Mar 22, 2026

Rating: 5/5

Fast shipping and easy install

Arrived two days earlier than expected. The assembly fits perfectly into the P1P tool head. I appreciate that it comes fully assembled with the thermistor and heater already tested.

Anonymous

Mar 16, 2026

Rating: 4/5

Solid performance

Works exactly as described. The heat creep resistance seems better than the original unit. Only giving 4 stars because the instructions could be more detailed, but there are plenty of videos online.

Anonymous

Mar 03, 2026

Rating: 4/5

Great upgrade, slight learning curve

The build quality is excellent and feels very robust. I had to tweak my temperature settings slightly compared to the stock brass nozzle, but once dialed in, the prints are perfect. Highly recommended for durability.

5 FAQ

Q: Does this come with a 0.6mm nozzle option?

A: This standard package includes a 0.4mm hardened steel nozzle. We do offer a separate listing for 0.6mm and 0.8mm variants if you need higher flow rates.

Q: Do I need to recalibrate my flow rate after installing?

A: Yes, it is highly recommended to run the flow rate calibration and pressure advance tuning in the printer settings after swapping the hotend to ensure optimal print quality.

Q: Can I use this with high-temperature polycarbonate?

A: Yes, the assembly is rated up to 300°C, making it suitable for Polycarbonate (PC) provided your printer enclosure maintains the necessary ambient temperature.

Q: What is the warranty period for this assembly?

A: This product comes with a 6-month manufacturer warranty covering defects in materials and workmanship under normal usage conditions.

Q: Is this compatible with the Bambu Lab A1 mini?

A: No, this specific hotend assembly is designed exclusively for the X1, X1-Carbon, P1P, and P1S series. The A1 mini uses a different tool head architecture.

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