Available 
For Bambu Lab Extruder Gear Hardened Steel Upgrade Assembly For Bambulab P1S P1P X1 X1C Extruder Gear 3D Printer Accessories
from £5.94-£6.99.
£5.94-£6.99
Options tracked: Upgraded Gear
Buying guide
Best 3d printers to compare
A compatibility-first AliExpress shortlist with 4 items, priced from £6.39 to £22.49, where the right pick depends on exact model fit, variant choice and delivery terms.
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Last verified: 2026-07-28
Quick verdict
This is best read as a parts-and-accessories shortlist, not a universal best-buy list for complete printers. The 4 items run from £6.39 to £22.49, and the lineup includes 3 Sirol listings plus one NONE-branded CNC touch probe. Visible ratings and review counts are absent for all four, so the safest approach is to compare exact model fit, variant choice and live delivery details before assuming any item is the right buy.
Top picks to compare
Start with For Bambu Lab Extruder Gear Hardened Steel Upgrade Assembly For Bambulab P1S P1P X1 X1C Extruder Gear 3D Printer Accessories (£5.94-£6.99), For Creality K2/K2 Pro Build Plate Double sided Cold Plate PEI PEO PET PEY Heat Bed Spring Steel Sheet For K2/K2 Pro 3D Printer (£9.69-£10.65), Glacier Cold Build Plate For Elegoo Centauri Carbon Heat Bed High Viscosity Two Sided Printing 261mm*270mm 3D Printer Parts (£6.99-£7.39) because they give you a focused set of current retailer options to compare. The visible price range is £3.43-£10.65, so check whether the extra spend buys a useful specification difference rather than only a different brand or finish. The shortlist includes Sirol, which helps you compare familiar brands against specification, delivery and value.
Available 
For Creality K2/K2 Pro Build Plate Double sided Cold Plate PEI PEO PET PEY Heat Bed Spring Steel Sheet For K2/K2 Pro 3D Printer
from £9.69-£10.65.
£9.69-£10.65
Options tracked: Textured PEI-PEI
Available 
Glacier Cold Build Plate For Elegoo Centauri Carbon Heat Bed High Viscosity Two Sided Printing 261mm*270mm 3D Printer Parts
from £6.99-£7.39.
£6.99-£7.39
Options tracked: 0.2mm Hotend, 0.4mm Hotend
Available 
2510 Fan For Bambu Lab X1/P1 A1 Hotend Cooling Fan With Cable Rapid cooling Fan For Bambu X1C P1S P1P A1 A1 3D Printer
from £3.43-£3.60.
£3.43-£3.6
Options tracked: For A1 A1 Mini, For X1 X1C
At-a-glance comparison
Use this table to scan the shortlist quickly before opening individual product pages. It covers 3D printers, so compare like-for-like where possible before deciding which product best fits your device, project, budget and tolerance for delivery times. The most useful checks are product type, available options, current price and whether the retailer details match the way you plan to use it.
| Product | Type | Key spec | Options | From |
|---|---|---|---|---|
| For Bambu Lab Extruder Gear Hardened Steel Upgrade Assembly For Bambulab P1S P1P X1 X1C Extruder Gear 3D Printer Accessories | 3D printers | Check retailer | Upgraded Gear | £5.94 |
| For Creality K2/K2 Pro Build Plate Double sided Cold Plate PEI PEO PET PEY Heat Bed Spring Steel Sheet For K2/K2 Pro 3D Printer | 3D printers | Check retailer | Textured PEI-PEI | £9.69 |
| Glacier Cold Build Plate For Elegoo Centauri Carbon Heat Bed High Viscosity Two Sided Printing 261mm*270mm 3D Printer Parts | 3D printers | Check retailer | 0.2mm Hotend, 0.4mm Hotend | £6.99 |
| 2510 Fan For Bambu Lab X1/P1 A1 Hotend Cooling Fan With Cable Rapid cooling Fan For Bambu X1C P1S P1P A1 A1 3D Printer | 3D printers | Check retailer | For A1 A1 Mini, For X1 X1C | £3.43 |
What the research suggests
The clearest buying filter here is compatibility with the exact machine model, because these are model-specific parts rather than general-use accessories. That matters especially for the Sirol Bambu Lab extruder gear upgrade at £6.39-£6.89, which is listed for P1S, P1P, X1 and X1C models, and for the two build plates: the Sirol Creality K2/K2 Pro double-sided cold plate (£9.79-£11.09) and the Sirol Elegoo Centauri Carbon cold build plate (£6.99-£7.29). Build-plate surface type also matters in practice, because adhesion behavior and finish are part of the buying decision, not just the model name. For the Bambu part, hardened steel is the useful clue for compatible printers and abrasive-filament use, while the NONE-branded XYZ touch probe is a different GRBL/Mach3 use case altogether. The shortlist is useful for narrowing options, but it is not a definitive ranking because visible review evidence is limited and the live listing details still need checking.
Buyer trade-offs to compare
The lowest-priced item is the Sirol Bambu Lab extruder gear upgrade at £6.39-£6.89, but low price only helps if your printer is one of the listed P1S, P1P, X1 or X1C models. The Creality K2/K2 Pro plate sits at £9.79-£11.09 and gives you more surface-choice complexity, while the Elegoo Centauri Carbon plate is £6.99-£7.29 and looks like a more focused compatibility play. The NONE XYZ touch probe is the outlier at £22.49-£24.89, so it should be compared as a separate CNC accessory purchase rather than bundled mentally with printer parts. As a practical rule, buy the item whose model fit and surface or upgrade function match your machine first, then weigh the price difference.
Why these items are on the same shortlist
These products sit together because they are all AliExpress finds with enough current price and option detail to compare, even though they solve different jobs. Three are printer-ecosystem parts from Sirol: a hardened steel extruder gear assembly for Bambu Lab P1S/P1P/X1/X1C, a double-sided K2/K2 Pro build plate, and a cold build plate for Elegoo Centauri Carbon. The fourth item, from NONE, is a touch probe for CNC processing and GRBL/Mach3 use, which is useful to include as a comparison point but may belong in a different shopping decision. Each listing shows 3 option choices, so variant clarity matters when the title alone is doing a lot of work.
Shortlist benchmark
The current price range is £6.39-£22.49, with a median around £8.39, so this is a relatively tight-value shortlist apart from the CNC probe at the top end. Brand coverage is limited to Sirol and NONE, and all four listings show 3 variant options, which makes variant clarity an important part of the buying decision. There are no visible ratings or review counts in the supplied listing data, so shoppers should verify current stock, delivery cost, delivery time and any live review activity on the retailer page before ordering.
How to choose between them
Start by matching the exact printer or machine model, because that is the most important filter for all four items. Next, confirm the correct variant: the Sirol Bambu Lab gear upgrade only makes sense for P1S, P1P, X1 or X1C owners, while the Creality and Elegoo plates need the exact bed size and surface style your printer expects. If you are choosing between the two build plates, think about surface behavior as well as brand fit: the Creality K2/K2 Pro double-sided plate gives you a different surface choice from the Elegoo Centauri Carbon cold plate, so the better pick depends on the finish and adhesion behaviour you want. After that, check delivery cost, delivery time, stock status and any visible reviews on the live listing, since those details can change the value picture more than a small difference in headline price.
Value notes for UK shoppers
Value here is about usefulness at the current price, not just buying the cheapest ticket. The Sirol gear upgrade may offer the best fit for owners who want a hardened steel part for compatible Bambu machines, while the Creality and Elegoo plates are better judged on surface type, adhesion preference and whether the fit is exact. The NONE touch probe only looks good value if you specifically need a GRBL/Mach3 sensor; otherwise its £22.49-£24.89 price makes it harder to justify against the simpler printer-part options. Always check the live AliExpress page for latest price and availability before buying.
Retailer details used
Last checked 2026-07-28. Use this as a shopping aid rather than a substitute for the live retailer listing. Always confirm the latest price, delivery cost, stock status and product details with the retailer before buying.
Helpful next reads
Keep comparing with related reviews and buying guides before checking the latest retailer prices.
Buying questions
How do I know if an AliExpress printer part is compatible with my exact model?
Match the listing to your exact printer name and version first. For example, the Sirol Bambu Lab gear assembly is only relevant to P1S, P1P, X1 and X1C models, while the Creality and Elegoo plates are tied to specific machine families and bed sizes.
Is the cheapest item automatically the best value?
Not on this shortlist. The £6.39 Sirol Bambu Lab gear upgrade is only good value if it suits your printer and use case, while a slightly dearer build plate can be the better buy if its surface type or compatibility matches your machine more closely.
Should the CNC touch probe be compared with the printer parts?
Only loosely. The NONE XYZ touch probe is for CNC processing and GRBL/Mach3 use, so it serves a different job from the Sirol gear or the Creality and Elegoo plates. Most shoppers will want to treat it as a separate buying decision.
What should I check on the live AliExpress listing before ordering from the UK?
Confirm stock, delivery cost, delivery time, the exact option selected and any visible ratings or review counts. With this shortlist, those live details matter because the visible review evidence is limited and the listings are very model-specific.