SUNLU Refill PETG Filament 1.75mm, PETG Refill 3D Printer Filament, Suitable for Bambu Lab Filament and SUNLU Reusable spools, Dimensional Accuracy +/- 0.02 mm, 1kg per Spool, 4 Pack, 4 Grey
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Availability:
16 left in stock
Arrives
Tuesday, Mar 10
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Color: 4kg Petg Grey+grey+grey+grey
Material Type: Filament 4KG PETG
Features
- 1Read Before Your Buying- SUNLU PETG Refill filament can not be used directly. It needs to be installed on an empty reusable spool from SUNLU and Bambu Lab before use.
- 2PETG Refill Filament- SUNLU Refill PETG 3D Printer Filament combines the advantages of both PETG and ABS 3D printer filament, High Toughness and Easy to use.
- 3Superior Compatibility- PETG Filament refill is fully compatible with reusable spools of SUNLU filament and Bambu Lab filament. You can also print your own spool for seamless use with most 3D printers.
- 4Enhanced Toughness- Known for its toughness, PETG outperforms many other filaments in durability, making it ideal for creating sturdy and resilient items that can withstand stress and use.
- 5Economy Pack- Same quality, less cost. If you have reusable spools from SUNLU or Bambu filament, this PETG filament refill will drastically cut down the cost of your printing projects.
- 6High Impact StrengthWith its high impact resistance, PETG is perfect for printing parts that need to endure bumps and drops, ensuring long-lasting performance without cracks or breaks.
- 7Smooth PrintingSUNLU PETG filament is specially engineered to reduce stringiness and eliminate clogging, ensuring a smooth and consistent print every time.
- 8PETG Recommend SettingsWe recommend printing the PETG filament at a nozzle temperature of 240-260C, bed temperature of 60-70C, printing speed of 50-200mm/s.
- 9Vacuum PackagingSUNLU 3D Printer Filaments are sealed in airtight vacuum packaging which ensures that they remain moisture-free and preserve their quality from the factory to your 3D printer.
- 10Full Ecosystem Support- SUNLU offers a complete 3D printing ecosystem: 3d filaments, 3d filament dryers, 3d printer resins and post-processing tools - all seamlessly compatible for scalable solutions.
Brand: SUNLU
Material: Filament 4KG PETG
Color: 4kg Petg Grey+grey+grey+grey
Item Weight: 4 Kilograms
Item Diameter: 1.75 Millimeters
Manufacturer: SUNLU
Brand: SUNLU
Item Weight: 8.8 pounds
Package Dimensions: 10.16 x 7.52 x 7.44 inches
Color: 4kg Petg Grey+grey+grey+grey
Material Type: Filament 4KG PETG
Number of Items: 4
Size: 1KG*4
Manufacturer Part Number: SLUS-PETG-GY+GY+GY+GY-1KG*4-N
Date First Available: July 1, 2025
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Mar 10
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Color: 4000g Petg Black+black+black+black
Material Type: Filament 4KG PETG
I've been using this SUNLU PETG refill filament on my Bambu Lab P1S and it's been performing excellently. The refill system works seamlessly with the Bambu Lab ecosystem - the spool winding is consistent and feeds smoothly without tangles or snags. Print quality has been outstanding. Layer adhesion is strong, and I'm getting clean, consistent prints with minimal stringing when using the standard PETG profile. The material has good temperature consistency throughout the spool, which is critical for dimensional accuracy on longer prints. The price point makes this an economical choice compared to buying new spools each time, and the refill approach is more environmentally friendly. I've printed functional parts, mechanical components, and prototypes with this filament and it handles everything well. For Bambu Lab users specifically, the refill design integrates perfectly with the AMS system. The filament characteristics match well with the built-in PETG presets, making it essentially plug-and-play. Highly recommend for anyone running a Bambu Lab printer who wants reliable PETG at a good value.
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Reviewed in the United States on February 8, 2026 by C0dyaw
All four colors—Beige, Coffee Brown, Olive Green, and Oak—have a gorgeous, natural look that’s perfect for prints with organic or wood-inspired designs. The finish is clean and consistent, and each spool feeds smoothly without tangles. What really stands out is the print quality. Layer lines are minimal, adhesion is reliable, and the filament handles both detailed models and larger prints with zero issues. I’ve had no stringing or nozzle clogging, and the PLA+ strength is noticeably better than standard PLA.
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Reviewed in the United States on December 9, 2025 by Rey Perez
Color: 4kg Petg Grey+grey+grey+grey
Material Type: Filament 4KG PETG
I mostly print functional items for tool storage or other things, so I don’t need pretty colors. What is great about this filament is that it comes on refill spools that fit on Bambu reels. I was tired of tossing plastic reels. I was looking for a price conscious option that printed well and was readily available. I have had minimal stringing on the things I have been printing and am very pleased with the strength of the items. I’ve bought the Sunlu PETG in a variety of colors. I find it to be a bit more gloss finish than Bambu or Creality filaments, but for my use cases this doesn’t bother me.
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Reviewed in the United States on January 10, 2026 by Brian Klock Brian Klock
Color: 4kg Petg Cmyk-white+magenta+yellow+cyan
Material Type: Filament 4KG PETG
The filament came in great condition, absolutely amazing by the way the print come out and there was absolutely no stringing/clogs, adhesion was great didn’t lift or warp, no tangles and fits perfectly!
Reviewed in the United States on February 25, 2026 by E E
Color: 4000g Petg Black+black+black+black
Material Type: Filament 4KG PETG
Always great filament. Prints excellent, no adhesion issues. Great price
Reviewed in the United States on February 18, 2026 by Samuel allison
Color: Black+white+red+klein Blue
Material Type: Filament 4KG PETG
Inconsistent thicknesses with weird deformations, clogging causing errors, waste of time and money. I bought several of these packs and have nothing but problems. To start, the rolls don't fit on what should be Gen 3 spools like Sunlu claims. Ive compared my spools with their Gen 3 and they are the same. This filament is almost oily or slimy in its feel and print, when it prints properly. The consistency seems to change within the spools even with proper drying techniques resulting in print anomolies. And now, the white has clogged my printer 3 times in the middle of multi hour prints requiring me to disassemble the extruder to clear the clog, and yes, I've troubleshot with the manufacturer and other filaments print without these issues after being calibrated. Unless Sunlu can do better, DO NOT PURCHASE! *Update* After trying to reach out to SUNLU, I've been left with only crickets. They are completely unresponsive and I've now had a spool basically disintegrate going through the tubes, leaving residue throughout the entire system. Never had a problem with SUNLU before but now they don't seem to care. 20 spools going in the trash now because I can't trust any of them.
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Reviewed in the United States on November 3, 2025 by Nathaniel T. Nathaniel T.
Color: 4000g Petg White+white+white+white
Material Type: Filament 4KG PETG
Work well on Bambu printer.
Reviewed in the United States on January 12, 2026 by Albert T
I’ve been using Sunlu PLA filament refills for several months, and they’ve become one of my go-to options for everyday printing. The quality is consistently excellent — the filament feeds smoothly without tangling or clogging, and the prints come out with a clean, even finish every time. I also love the eco-friendly concept of the refill spools. It cuts down on waste and saves space compared to full plastic spools. The packaging is neat, moisture-proof, and easy to store. The color quality is vibrant, layer adhesion is solid, and I rarely need to adjust print settings. For the price and quality, it’s hard to beat.
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Reviewed in the United States on October 26, 2025 by Christian