UBB Store

High Flow 0.4mm Hardened Steel Nozzle for Prusa i3 MK4/XL/MK3.9, Titanium Pipe,
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
High Flow 0.4mm Hardened Steel Nozzle for Prusa i3 MK4/XL/MK3.9, Titanium Pipe,
Price: US $26.99
High Flow for Ultra-Fast Printing

Experience unparalleled speed and efficiency with our advanced nozzle chamber, designed to deliver a maximum flow rate of 30 mm³/s. This feature enables high-speed printing at up to 600 mm/s while maintaining exceptional precision, making it perfect for reducing print time on large models.

Upgraded Wear-Resistant Materials

Constructed with:

  • Hardened steel bimetal for enhanced durability
  • Titanium alloy integrated pipe for superior heat resistance
  • Brass heating block with excellent thermal conductivity (330w/m.k)

This robust design is ideal for handling abrasive filaments such as carbon fiber or glass fiber.

Precision Craftsmanship to Prevent Leaks & Clogs

Our product features:

  • Tightly fitted joints that eliminate filament leakage
  • Ultra-smooth inner walls (roughness Ra<0.4) for consistent filament feeding
  • Burr-free openings that minimize clogging, even with flexible TPU or high-temperature PETG
Wide Compatibility with 1.75mm Filaments

This product works seamlessly with a variety of standard and industrial-grade filaments, including:

  • PLA
  • ABS
  • PETG
  • TPU
  • Wood composites
  • Carbon fiber and glass fiber composites

Perfectly versatile for both hobbyists and professional 3D printing projects.

Simple Installation

Designed for ease of use, this product is a direct replacement for Prusa i3 MK4/ XL/ MK3.9 hotends. Simply remove the old nozzle and secure the new one—no extra tools or technical expertise required!



Buy Now