The default AMS setup on the Bambu Lab P1S routes the PTFE tubes from the AMS, around the back of the printer, and into the filament hub — a long path that adds up on every single filament swap. On multi-color prints with hundreds of color changes, those extra seconds per swap become significant.
The AMS Speeder solves this by drastically shortening the PTFE tube path between the AMS and the printer. It requires cutting new, shorter PTFE tubes and updating the filament load/unload durations in Bambu Studio. No extra hardware needed — just the printed parts and optionally TPU inserts to prevent vibration.
To use the AMS Speeder, the AMS needs to sit on top of the printer. I use the AMS Riser V2 by maCyo42 — in my opinion the best riser out there, with LED lightstrip support and plenty of community remixes. And AMS Speeder has a profile for it :)
complementary mods
A couple of other small prints complete the setup:
- AMS buffer cover — protects the buffer from dust and scratches
- AMS buffer output guide and dust cover — keeps the filament output clean and guides it smoothly into the printer
- 4-in-1 PTFE adapter bracket — holds the PTFE 1-to-4 adapter in place
- Low profile belt dust cover — keeps dust off the belts
- Dust cap for second 6-pin port — covers the unused 6-pin port on the AMS to keep dust and moisture out
I installed this on both my P1S printers. Simple mod, noticeable impact on multi-color print times.