4kg High Speed PLA Filament 1.75mm - 4 Spools, 4 Colors

In this review the SUNLU 4KG High Speed PLA Filament is judged as a practical upgrade for hobbyists and small workshops that need faster print turnaround without major hardware changes. The bottom line: this pack of four 1kg spools (black, white, red, orange) is worth considering if you value reduced print time and consistent filament feed, because the filament is formulated for higher flowability and quicker cooling so you can push print speeds beyond what typical PLA handles while keeping print quality reliable.

Key Features

• High flowability: Increased flowability is designed to allow smooth extrusion at speeds over 250mm/s, reducing total print time for large batches.
• Faster cooling: Improved heat dissipation helps prints cure quicker, which reduces stringing and improves dimensional accuracy during high-speed jobs.
• Lower average print temperature: A lower recommended printing temperature compared with regular PLA can save energy and reduce heat-related deformation.
• Consistent diameter: Tight diameter tolerance of 1.75mm 0.02mm minimizes under- or over-extrusion and supports reliable layering.
• Dry-packed and ready: Each spool is pre-dried and vacuum-sealed to avoid moisture-related bubbles and clogs that compromise long prints.

Who It's For

This filament is aimed at makers, prototypers, and small production users who want to shorten print cycles without major tuning; the four-color pack is convenient for mixed-color runs or rapid prototyping where color coding helps organization. It also suits users of FDM printers that can reliably handle higher filament feed rates and faster cooling.

Users who require ultra-high strength engineering plastics, extremely flexible materials, or specialized surface finishes should look elsewhere, since this product is a high-speed PLA variant optimized for speed and printability rather than advanced mechanical properties.

Pros & Cons

Pros

• Designed for high-speed printing, which can significantly reduce total print time on compatible machines.
• Good heat dissipation reduces material buildup and helps dimensional accuracy during fast prints.
• Consistent diameter and vacuum-sealed spools lower the chance of clogs and bubbles when handled correctly.
• Four standard colors included, providing instant variety for prototypes and color-coded parts.

Cons

• Some users report mixed platform adhesion and occasional brittleness, so bed preparation and slicer tuning may be required.
• Temperature-sensitive behavior means slicer settings may need careful adjustment to avoid stringing at high speeds.

Specifications

Our Verdict

The SUNLU 4kg High Speed PLA pack is a solid choice for makers and small shops that want faster prints without sacrificing consistency. It offers dependable diameter control, pre-dried spools, and a formulation tuned for higher flow and quicker cooling. Buyers should expect to spend a little time tuning print temperature and adhesion settings, but for those willing to optimize slicer parameters this pack delivers strong value and faster throughput.

Frequently Asked Questions

Do I need a special hotend to use this filament?
No special hotend is required; it runs on standard FDM setups but benefits from printers that can sustain higher feed rates and maintain consistent extrusion.

What should I do if I see stringing?
Reduce print temperature and recheck retraction settings, since this high-speed PLA is temperature-sensitive and stringing can be cured by slight adjustments.

Are the spools moisture-free out of the package?
Yes, each spool is pre-dried and vacuum-sealed to minimize moisture and reduce the chance of bubbles or clogs during printing.