SUNLU PLA+ Filament Refill, 1.75 mm, 4 kg

SUNLU PLA Plus Filament Refill is a four-roll, no-spool PLA+ bundle for compatible reusable spools. The listing names black, white, grey and transparent, and claims compatibility with Bambu Lab AMS and reusable spools from several brands, making it relevant to owners who already have a suitable reel.

At a glance

Four 1 kg refill rolls are listed, with no spool supplied in the product title.
The listing claims compatibility with Bambu Lab AMS and reusable spools, including SUNLU and ELEGOO options.
Manufacturer claims include a filament diameter accuracy of +/-0.02 mm and vacuum-sealed packaging with desiccant.
The stated colours are black, white, grey and transparent.

Price

£30.98Save 28%

Reference price: ~~£42.99~~

Price checked: 12 Nov 2026

View offer Ahead of Black FridayExplore the selection

Often bought together

ELEGOO Rapid PLA Plus 3D Printer Filament 1.75mm Black 1KG, Up to 600mm/s | PLA+ High Speed Printing, Dimensional Accuracy +/

£13.99

ELEGOO PLA Filament 1.75mm Black 1KG, 3D Filament Dimensional Accuracy +/- 0.02mm, 1kg Cardboard Spool(2.2lbs) 3D Printing Fi

£11.39

Pros and cons

Pros

Four colour options are supplied as a 4 kg total refill bundle, according to the listing.
No-spool refills can suit buyers who already have compatible reusable spools.
The claimed diameter tolerance gives buyers a specific manufacturing target to compare against other filament listings.

Technical specifications

10 specifications

Identity
Brand	SUNLU
Model	SUNLU PLA Plus Filament Refill

Dimensions and installation
Weight listed	4 Kilograms
Filament diameter	1.75 Millimetres
Refill hole diameter	82.5mm (3.22inch)

Materials and protection
Material listed	Polylactic Acid
Colours listed	Black+White+Grey+Transparent
Dimensional accuracy claim	+/-0.02 mm

Pack and warranty
Rolls listed	4
Product warranty	1 year manufacturer

What to know before buying

The title and listing details describe four 1 kg rolls in black, white, grey and transparent. Confirm the selected colour bundle and spool compatibility, since the refill requires a suitable reusable spool and the stated fit is a manufacturer claim.
Manufacturer claims of increased toughness, smooth feeding, reduced warping and neat winding are not independently verified. Printing results can depend on the printer and setup.

Who is it for?

A good fit for

3D-printing users who need a 1.75 mm PLA+ refill in four listed colours.
Owners of compatible reusable spools who prefer buying filament without another spool.
Buyers seeking a multi-roll refill bundle for ongoing PLA printing.

Less suited to

Buyers who need filament supplied on a spool or whose printer setup does not accept 1.75 mm filament.
Anyone needing a confirmed colour selection or spool fit beyond the listing's general compatibility claims.

SUNLU PLA+ Filament Refill, 1.75 mm, 4 kg · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.4 / 5 · 272 ratings

5 stars76%76%
4 stars10%10%
3 stars4%4%
2 stars6%6%
1 star4%4%

Customer feedback describes the filament as reliable and good value, while reports on durability and adhesion are mixed. Some feedback mentions consistent extrusion or good layer adhesion, while other reports describe filament loosening on the spool or being pulled down its side. For buyers using the claimed neat-winding refill, these mixed reports make handling and spool fit worth considering. Aggregate ratings are mostly five-star, but they do not establish how the filament will perform in a particular printer.

Positive themes

Customers describe the filament as reliable and good value.

Mixed feedback

Durability feedback is mixed, with reports of consistent extrusion as well as filament loosening on the spool.
Adhesion feedback is mixed, including praise for layer adhesion and reports of filament being pulled down the side.

Frequently asked questions

How much filament is included?

The title and feature listing state four 1 kg rolls, for 4 kg total.

What is the filament diameter?

The listed item diameter is 1.75 Millimetres.

Does it include a spool?

It is described as a no-spool refill. You need a compatible reusable spool for use.

Which spools does the listing say it fits?

The listing claims compatibility with Bambu Lab AMS and reusable spools, including SUNLU and ELEGOO. Check that the refill dimensions suit your particular spool.