Prusa MK4S

Upgrade kits that fit the Prusa MK4S

5 upgrade kits name the Prusa MK4S as compatible in their listings, from 1 brand (Prusa Research) sold by Printed Solid and West3D.

Listed prices run from $111.99 to $649.99.

None are owner-verified yet: every fit here is the seller's claim, quoted under each part.

Original Prusa MK3.9 to MK3.9S upgrade kit
Listed as compatibleUpgrade kitsPrusa Researchsold by Printed Solid
“The MK4S is compatible with two new optional addons for enthusiasts and modders.”
$111.99View at Printed SolidCheck AmazonPaid link
Original Prusa MK4 to MK4S upgrade kits
Listed as compatibleUpgrade kitsPrusa Researchsold by Printed Solid
$119.00View at Printed SolidCheck AmazonPaid link
Original Prusa MMU3 (for MK4S/MK3.9S) - Assembled
Listed as compatibleUpgrade kitsPrusa Researchsold by Printed Solid
$479.00View at Printed SolidCheck AmazonPaid link
Original Prusa MMU3 (for MK4S/MK3.9S) - Full kit
Listed as compatibleUpgrade kitsPrusa Researchsold by Printed Solid
$449.00View at Printed SolidCheck AmazonPaid link
Prusa MK4S to Prusa CORE One+ (Gen 2) Conversion Kit
Listed as compatibleUpgrade kitsPrusa Researchsold by West3D
$649.99View at West3DCheck AmazonPaid link

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Frequently asked questions

How many upgrade kits fit the Prusa MK4S?

We list 5 that their maker or seller says are compatible with the Prusa MK4S.

How much do MK4S upgrade kits cost?

Listed prices range from $111.99 to $649.99 across 2 stores. Prices are from the store listings when we last read them.

How do I know a upgrade kit really fits?

Each part shows the exact wording from its listing. Look for the printer model and revision in that note, and check whether it needs an adapter or a firmware change. If you have installed one, report it on this page so we can mark it verified.