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SUNLU refills (no spool) filament, ranked by £/kg

Every listing of SUNLU refills (no spool) filament we track on Amazon UK, ranked by £/kg.

Best £/kg Biggest discount Lowest price Best rated Newest

By material: PLA (2,832) PETG (928) PLA+ (753) TPU (276) ABS (181) ASA (130) PETG-CF (59) Nylon (41) PC (31) PLA-CF (17)

By finish (SUNLU): All finishes Silk (84) Matte (39) Dual & triple colour (35) Rainbow & gradient (8) Translucent (29) Glow in the dark (6) Marble (4) Wood (1) Refills (no spool) (31)

31 listings tracked, 2 on offer right now.

Product	Material	Weight	Rating	Price	Per kg	Deal
SUNLU 4KG PLA+2.0 3D Printer Filament Refill, Stronger PLA+ Filament Bundle, N	PLA+	4 kg refill	4.3 out of 5 (206 Amazon ratings)	£31.18	£7.80	Warehouse · 37% under new
SUNLU PLA Refill Filament 1.75mm, Refill PLA 3D Printer Filament Suitable for	PLA	4 kg refill	4.4 out of 5 (231 Amazon ratings)	£32.76	£8.19	Warehouse · 6% under new
SUNLU 3D Printer Filament PETG Filament Refill 1.75mm,Suitable for SUNLU Third	PETG	4 kg refill	4.5 out of 5 (177 Amazon ratings)	£32.99	£8.25	—
SUNLU PLA+ Filament Refill 1.75mm 4KG, No-Spool PLA Plus Refill for Reusable S	PLA+	4 kg refill	4.5 out of 5 (257 Amazon ratings)	£33.60	£8.40	Like New · 21% under new
SUNLU 4KG Rapid PETG Filament Refill 1.75mm, High Speed PETG Black*4	PETG	4 kg refill	4.2 out of 5 (25 Amazon ratings)	£33.99	£8.50	—
SUNLU 4KG Rapid PETG Filament Refill 1.75mm, High Speed PETG White*4	PETG	4 kg refill	4.2 out of 5 (25 Amazon ratings)	£33.99	£8.50	—
SUNLU Matte PLA Filament Refill 1.75mm 4KG, No-Spool Black PLA Matte Refill fo	PLA	4 kg refill	4.3 out of 5 (190 Amazon ratings)	£35.99	£9.00	12% below
SUNLU Matte PLA Filament Refill 1.75mm 4KG, No-Spool Grey PLA Matte Refill for	PLA	4 kg refill	4.3 out of 5 (191 Amazon ratings)	£35.99	£9.00	12% below
SUNLU 4KG PLA+2.0 3D Printer Filament Refill, High Toughness PLA+ Filament Bun	PLA+	4 kg refill	4.3 out of 5 (206 Amazon ratings)	£36.99	£9.25	—
SUNLU 4KG Silk PLA Filament Refill Bundle, No-Spool 3D Printer Silk Filament 1	PLA	4 kg refill	4.5 out of 5 (52 Amazon ratings)	£36.99	£9.25	—
SUNLU 3D Printer Filament PETG Filament Refill 1.75mm,Suitable for SUNLU Third	PETG	4 kg refill	4.5 out of 5 (177 Amazon ratings)	£37.73	£9.43	Like New · 7% under new
SUNLU PLA+ Filament Refill 1.75mm 4KG, No-Spool White PLA Plus Refill for Reus	PLA+	4 kg refill	4.5 out of 5 (257 Amazon ratings)	£37.99	£9.50	11% below
SUNLU PLA+ Filament Refill 1.75mm 4KG, No-Spool PLA Plus Refill for Reusable S	PLA+	4 kg refill	4.5 out of 5 (257 Amazon ratings)	£37.99	£9.50	—
SUNLU PLA+ Filament Refill 1.75mm 4KG, No-Spool PLA Plus Refill for Reusable S	PLA+	4 kg refill	4.5 out of 5 (257 Amazon ratings)	£37.99	£9.50	—
SUNLU PLA+ Filament Refill 1.75mm 4KG, No-Spool Black PLA Plus Refill for Reus	PLA+	4 kg refill	4.5 out of 5 (257 Amazon ratings)	£37.99	£9.50	11% below
SUNLU PLA+ Filament Refill 1.75mm 4KG, No-Spool Grey PLA Plus Refill for Reusa	PLA+	4 kg refill	4.5 out of 5 (257 Amazon ratings)	£37.99	£9.50	11% below
SUNLU 3D Printer Filament PETG Filament Refill 1.75mm,Suitable for SUNLU Third	PETG	4 kg refill	4.5 out of 5 (177 Amazon ratings)	£40.99	£10.25	—
SUNLU CMYK 3D Printer Filament PETG Filament Refill 1.75mm,Suitable for SUNLU	PETG	4 kg refill	4.5 out of 5 (177 Amazon ratings)	£40.99	£10.25	—
SUNLU 3D Printer Filament PETG Filament Refill 1.75mm,Suitable for SUNLU Third	PETG	4 kg refill	4.5 out of 5 (177 Amazon ratings)	£40.99	£10.25	—
SUNLU 4KG PLA+2.0 3D Printer Filament Refill, High Toughness PLA+ Filament Bun	PLA+	4 kg refill	4.3 out of 5 (206 Amazon ratings)	£49.99	£12.50	—
SUNLU 4KG PLA+2.0 3D Printer Filament Refill, High Toughness PLA+ Filament Bun	PLA+	4 kg refill	4.3 out of 5 (206 Amazon ratings)	£49.99	£12.50	—
SUNLU PLA+ Filament Refill 1.75mm 4KG, No-Spool PLA Plus Refill for Reusable S	PLA+	4 kg refill	4.4 out of 5 (251 Amazon ratings)	—	—	—
SUNLU PLA+ Filament Refill 1.75mm 4KG, No-Spool PLA Plus Refill for Reusable S	PLA+	4 kg refill	4.4 out of 5 (235 Amazon ratings)	—	—	—
SUNLU 500g PLA Refill Filament 1.75mm, Refill PLA 3D Printer Filament Suitable	PLA	2 kg refill	4.4 out of 5 (7,498 Amazon ratings)	—	—	—
SUNLU 500g PLA Refill Filament 1.75mm, Refill PLA 3D Printer Filament Suitable	PLA	2 kg refill	4.3 out of 5 (64 Amazon ratings)	—	—	—
SUNLU 500g PLA Refill Filament 1.75mm, Refill PLA 3D Printer Filament Suitable	PLA	2 kg refill	4.5 out of 5 (7,715 Amazon ratings)	—	—	—
SUNLU 500g PLA Refill Filament 1.75mm, Refill PLA 3D Printer Filament Suitable	PLA	2 kg refill	4.4 out of 5 (7,431 Amazon ratings)	—	—	—
SUNLU 500g PLA Refill Filament 1.75mm, Refill PLA 3D Printer Filament Suitable	PLA	2 kg refill	4.5 out of 5 (7,786 Amazon ratings)	—	—	—
SUNLU 500g PLA Refill Filament 1.75mm, Refill PLA 3D Printer Filament Suitable	PLA	2 kg refill	4.5 out of 5 (6,529 Amazon ratings)	—	—	—
SUNLU 500g PLA Refill Filament 1.75mm, Refill PLA 3D Printer Filament Suitable	PLA	2 kg refill	4.4 out of 5 (8 Amazon ratings)	—	—	—
SUNLU 3D Printer Filament PETG Filament Refill 1.75mm,Suitable for SUNLU Third	PETG	4 kg refill	4.5 out of 5 (177 Amazon ratings)	—	—	—

Refills (no spool) filament by brand

Guides

Bed adhesion: what actually works
Glue sticks, hairspray, rafts, brims and expensive surfaces — an honest ranking of what fixes prints coming loose, starting with the free fix that solves most cases.
Do you need a filament dryer?
Wet filament is real and ruins prints, but a dedicated dryer is not the only answer. How to tell if moisture is your problem, and what to do about it.
Filament storage: dry boxes, vacuum bags and desiccant
Keeping filament dry is cheaper than drying it out. What actually works, what desiccant to use, and why the little sachet in the bag is already spent.
First layer calibration, properly
Nearly every adhesion problem and half of all print failures start in the first layer. How to set Z offset by eye, and what a good first layer actually looks like.

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