Printer model
Bambu Lab X1 and P1 series: hotend upgrades and flow numbers
Which hotend upgrade names the Bambu Lab P1P, P1S and X1C, what CNC Kitchen measured on the stock X1/P1P hotend, and what Bambu's pages did not confirm.
Also listed as X1C, X1 Carbon, P1S, P1P
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Short answer
BIQU lists its Panda Revo hotend for the Bambu Lab P1P, P1S and X1C, with a 40 mm³/s maker figure under BIQU's own test conditions. In CNC Kitchen's 2023 X1/P1P test, the stock hotend looked good to about 23 mm³/s and a genuine Bondtech CHT to about 32 (one setup). Bambu's own hotend pages could not be read, so X1/P1 hotend cross-fit is not confirmed.
What fitsAll 2 items that fit
- Hotend (P1P / P1S)Micro Swiss FlowTech hotend for Bambu Lab P1P / P1S (M3109P)Check price on Amazon
Key facts
- Build volume
- Not confirmed
- Motion system
- Not confirmed
- Stock extruder
- Not confirmed
- Stock hotend
- Not confirmedCNC Kitchen's flow figures for the stock hotend are in the notes.
- Nozzle standard
- Not confirmed
- Stock nozzle
- Not confirmed
- Max nozzle temperature
- Not confirmed
- Max bed temperature
- Not confirmed
- Firmware
- Not confirmed
- Latest listed firmware
- Not confirmed
- Power input
- Not confirmedWe could not confirm on Bambu Lab's pages how the X1 and P1 heatbeds are powered.
- Hardware revisions
- Not confirmed
- Maker maintenance rules
- Not confirmed
- Documented upgrade kits
- BIQU Panda Revo hotend (lists the P1P, P1S and X1C)[1]BIQU's page does not mention the X1E or A1 series. It says the Panda Revo takes RapidChange Revo nozzles except Revo Belt.
- Recall status
- No recall found on 2026-10-08[2]On 2026-10-08 we found the Bambu Lab A1 recall as the only 3D printer recall in CPSC's notices; it names the A1 only. That is a dated search, not proof that no recall exists.
- Not confirmed
- Not confirmedBambu Lab's store, wiki and spec pages returned errors on 2026-10-08.
Watch out for
- BIQU lists the Panda Revo for the P1P, P1S and X1C only. Its page does not mention the X1E or the A1 series.
- BIQU's 40 mm³/s is its own figure, measured with HS PLA at 260 °C and a 0.4 mm High Flow nozzle, not an independent result.
- Bambu Lab's hotend pages could not be read, so do not assume an X1 hotend and a P1 hotend are interchangeable.
What fits
Product details below are the seller's own description unless a source is shown. Pick the variant named for each item.
Hotend (P1P / P1S)
Micro Swiss FlowTech hotend for Bambu Lab P1P / P1S (M3109P)P1P and P1S only: choose the P1P/P1S version (M3109P) and the nozzle you want (CM2, CHT, CM2 CHT or DiamondBack). X1C owners need the X1 version (M3109X).
Micro Swiss names the X1C, P1S and P1P and sells separate X1 and P1 versions. It states no temperature rating for this kit.
Revo hotend
BIQU Panda Revo hotend for Bambu Lab P1P / P1S / X1CChoose the P1P/P1S version (1060000654); the X1C version is 1060000659, a different listing.
BIQU lists the Panda Revo for the P1P, P1S and X1C, rated 300 °C, taking Revo nozzles except Revo Belt. The X1E is not named.
In CNC Kitchen's 2023 Bambu Lab X1/P1P test with Voxel PLA at 220 °C, the stock hotend looked good to about 23 mm³/s, a third-party hardened steel nozzle to 24, a genuine Bondtech CHT to 32 and a short AliExpress CHT to 34. The endpoint was judged by eye on OrcaSlicer's vase-mode flow test. One setup, one filament.
In the same test, layer-strength coupons printed with the CHT nozzle averaged 35-37 MPa across flow rates, while the stock nozzle measured about 31-36 MPa, lower at the highest flows. The author calls the coupon method rough; this is not a general strength gain.
Questions
Does the BIQU Panda Revo fit the Bambu Lab P1S?
BIQU lists the Panda Revo as compatible with the Bambu Lab P1P, P1S and X1C. It does not mention the X1E or A1 series. See P1 and X1 hotend upgrades.[1]
How much flow does the stock X1 or P1P hotend manage?
In CNC Kitchen's 2023 test with Voxel PLA at 220 °C, the stock hotend looked good to about 23 mm³/s and a genuine Bondtech CHT to about 32 mm³/s. That is one setup, judged by eye.[3]
Is the X1 or P1 series part of the A1 recall?
No. CPSC's recall notice covers the A1 model only and names no other Bambu Lab model.[2]